| achlorhydria | (noun) an abnormal deficiency or absence of free hydrochloric acid in the gastric juice; often associated with severe anemias and cancer of the stomach | - |
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| achlorhydric | (adjective) lacking hydrochloric acid | - |
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| achondrite | (noun) a stony meteor lacking chondrules | - |
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| achondritic | (adjective) not having a granular structure | - |
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| (adjective) of or related to an achondrite | - |
| adrift | (adjective) afloat on the surface of a body of water | - |
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| (adjective) aimlessly drifting | Synonyms: afloat, aimless, directionless, planless, rudderless, undirected |
| (adverb) off course, wandering aimlessly | - |
| (adverb) floating freely; not anchored | - |
| alexandrite | (noun) a green variety of chrysoberyl used as a gemstone | - |
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| anhydride | (noun) a compound formed from one or more other compounds in a reaction resulting in removal of water | - |
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| archimandrite | (noun) the superior of an abbey of monks | Synonyms: abbot |
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| baldric | (noun) a wide (ornamented) belt worn over the right shoulder to support a sword or bugle by the left hip | Synonyms: baldrick |
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| baldrick | (noun) a wide (ornamented) belt worn over the right shoulder to support a sword or bugle by the left hip | Synonyms: baldric |
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| bedrid | (adjective) confined to bed (by illness) | Synonyms: bedfast, bedridden, sick-abed |
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| bedridden | (adjective) confined to bed (by illness) | Synonyms: bedfast, bedrid, sick-abed |
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| bicylindrical | (adjective) having two cylindrical surfaces usually with parallel axes | - |
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| cabdriver | (noun) someone who drives a taxi for a living | Synonyms: cabby, cabman, hack-driver, hack driver, livery driver, taxidriver, taximan |
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| calendric | (adjective) relating to or characteristic of or used in a calendar or time measurement | Synonyms: calendrical |
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| calendrical | (adjective) relating to or characteristic of or used in a calendar or time measurement | Synonyms: calendric |
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| chondrichthian | (noun) fishes in which the skeleton may be calcified but not ossified | Synonyms: cartilaginous fish |
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| chondrify | (verb) turn into cartilage | - |
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| chondrin | (noun) a substance that resembles gelatin and is obtained by boiling cartilage in water | - |
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| chondriosome | (noun) an organelle containing enzymes responsible for producing energy | Synonyms: mitochondrion |
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| chondrite | (noun) a rock of meteoric origin containing chondrules | - |
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| chondritic | (adjective) having a granular structure like that of chondrites | Synonyms: granular |
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| costochondritis | (noun) inflammation at the junction of a rib and its cartilage | - |
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| cyanohydrin | (noun) any organic compound in which the cyano radical -CN and the hydroxyl radical -OH are attached to the same carbon atom | - |
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| cylindric | (adjective) having the form of a cylinder | Synonyms: cylindrical |
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| cylindrical | (adjective) having the form of a cylinder | Synonyms: cylindric |
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| cylindricality | (noun) the roundness of a 3-dimensional cylinder | Synonyms: cylindricalness |
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| cylindricalness | (noun) the roundness of a 3-dimensional cylinder | Synonyms: cylindricality |
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| dendriform | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, arboriform, dendroid, dendroidal, tree-shaped, treelike |
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| dendrite | (noun) short fiber that conducts toward the cell body of the neuron | - |
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| dendritic | (adjective) (neuroscience) of or relating to or resembling a dendrite | - |
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| deoxyephedrine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| dimenhydrinate | (noun) antihistamine and antiemetic (trade name Dramamine) used to treat motion sickness | Synonyms: Dramamine |
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| drib | (noun) a small indefinite quantity (especially of a liquid) | Synonyms: driblet, drop |
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| dribble | (noun) the propulsion of a ball by repeated taps or kicks | Synonyms: dribbling |
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| (noun) saliva spilling from the mouth | Synonyms: drivel, drool, slobber |
| (noun) flowing in drops; the formation and falling of drops of liquid | Synonyms: drip, trickle |
| (verb) let saliva drivel from the mouth | Synonyms: drivel, drool, slabber, slaver, slobber |
| (verb) propel | Synonyms: carry |
| (verb) let or cause to fall in drops | Synonyms: drip, drop |
| (verb) run or flow slowly, as in drops or in an unsteady stream | Synonyms: filter, trickle |
| dribbler | (noun) a person who dribbles | Synonyms: driveller, drooler, slobberer |
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| (noun) a basketball player who is dribbling the ball to advance it | - |
| dribbling | (noun) the propulsion of a ball by repeated taps or kicks | Synonyms: dribble |
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| driblet | (noun) a small indefinite quantity (especially of a liquid) | Synonyms: drib, drop |
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| dried | (adjective) not still wet | - |
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| (adjective) preserved by removing natural moisture | Synonyms: dehydrated, desiccated |
| drier | (noun) an appliance that removes moisture | Synonyms: dryer |
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| (noun) a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture) | Synonyms: desiccant, drying agent, siccative |
| drift | (noun) a horizontal (or nearly horizontal) passageway in a mine | Synonyms: gallery, heading |
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| (noun) the pervading meaning or tenor | Synonyms: purport |
| (noun) a general tendency to change (as of opinion) | Synonyms: movement, trend |
| (noun) a large mass of material that is heaped up by the wind or by water currents | - |
| (noun) a force that moves something along | Synonyms: impetus, impulsion |
| (noun) the gradual departure from an intended course due to external influences (as a ship or plane) | - |
| (noun) a process of linguistic change over a period of time | - |
| (verb) be piled up in banks or heaps by the force of wind or a current | - |
| (verb) be subject to fluctuation | - |
| (verb) drive slowly and far afield for grazing | - |
| (verb) move about aimlessly or without any destination, often in search of food or employment | Synonyms: cast, ramble, range, roam, roll, rove, stray, swan, tramp, vagabond, wander |
| (verb) be in motion due to some air or water current | Synonyms: be adrift, blow, float |
| (verb) wander from a direct course or at random | Synonyms: err, stray |
| (verb) move in an unhurried fashion | - |
| (verb) cause to be carried by a current | - |
| (verb) live unhurriedly, irresponsibly, or freely | Synonyms: freewheel |
| (verb) vary or move from a fixed point or course | - |
| driftage | (noun) the deviation (by a vessel or aircraft) from its intended course due to drifting | - |
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| drifter | (noun) a wanderer who has no established residence or visible means of support | Synonyms: clochard, floater, vagabond, vagrant |
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| driftfish | (noun) small (6 inches) tropical butterfishes found worldwide | - |
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| (noun) larger butterfishes of the western Atlantic from the New York area to the northern Gulf of Mexico | - |
| drifting | (adjective) continually changing especially as from one abode or occupation to another | Synonyms: aimless, floating, vagabond, vagrant |
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| (noun) aimless wandering from place to place | - |
| driftwood | (noun) wood that is floating or that has been washed ashore | - |
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| drill | (noun) systematic training by multiple repetitions | Synonyms: exercise, practice, practice session, recitation |
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| (noun) (military) the training of soldiers to march (as in ceremonial parades) or to perform the manual of arms | - |
| (noun) similar to the mandrill but smaller and less brightly colored | Synonyms: Mandrillus leucophaeus |
| (noun) a tool with a sharp point and cutting edges for making holes in hard materials (usually rotating rapidly or by repeated blows) | - |
| (verb) learn by repetition | Synonyms: exercise, practice, practise |
| (verb) teach by repetition | - |
| (verb) train in the military, e.g., in the use of weapons | - |
| (verb) undergo military training or do military exercises | - |
| (verb) make a hole, especially with a pointed power or hand tool | Synonyms: bore |
| drilled | (adjective) trained in a skill by repetitious practice | - |
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| drilling | (noun) the act of drilling a hole in the earth in the hope of producing petroleum | Synonyms: boring, oil production |
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| (noun) the act of drilling | Synonyms: boring |
| drily | (adverb) in a dry laconic manner | Synonyms: dryly, laconically |
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| drink | (noun) the act of drinking alcoholic beverages to excess | Synonyms: boozing, crapulence, drinking, drunkenness |
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| (noun) the act of swallowing | Synonyms: deglutition, swallow |
| (noun) any liquid suitable for drinking | Synonyms: beverage, drinkable, potable |
| (noun) a single serving of a beverage | - |
| (noun) any large deep body of water | - |
| (verb) be fascinated or spell-bound by; pay close attention to | Synonyms: drink in |
| (verb) take in liquids | Synonyms: imbibe |
| (verb) consume alcohol | Synonyms: booze, fuddle, hit the bottle |
| (verb) drink excessive amounts of alcohol; be an alcoholic | Synonyms: tope |
| (verb) propose a toast to | Synonyms: pledge, salute, toast, wassail |
| drinkable | (adjective) suitable for drinking | Synonyms: potable |
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| (noun) any liquid suitable for drinking | Synonyms: beverage, drink, potable |
| drinker | (noun) a person who drinks alcoholic beverages (especially to excess) | Synonyms: imbiber, juicer, toper |
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| (noun) a person who drinks liquids | - |
| drinking | (noun) the act of consuming liquids | Synonyms: imbibing, imbibition |
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| (noun) the act of drinking alcoholic beverages to excess | Synonyms: boozing, crapulence, drink, drunkenness |
| drip | (noun) (architecture) a projection from a cornice or sill designed to protect the area below from rainwater (as over a window or doorway) | Synonyms: drip mold, drip mould |
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| (noun) flowing in drops; the formation and falling of drops of liquid | Synonyms: dribble, trickle |
| (noun) the sound of a liquid falling drop by drop | Synonyms: dripping |
| (verb) let or cause to fall in drops | Synonyms: dribble, drop |
| (verb) fall in drops | - |
| dripless | (adjective) designed to prevent dripping | - |
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| drippage | (noun) a liquid (as water) that flows in drops (as from the eaves of house) | Synonyms: dripping |
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| drippily | (adverb) in a mawkish and emotional manner | Synonyms: mawkishly |
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| drippiness | (noun) the physical property of being soft and drippy | - |
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| (noun) falsely emotional in a maudlin way | Synonyms: mawkishness, mushiness, sentimentality, sloppiness, soupiness |
| dripping | (noun) a liquid (as water) that flows in drops (as from the eaves of house) | Synonyms: drippage |
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| (noun) the sound of a liquid falling drop by drop | Synonyms: drip |
| (adverb) extremely wet | Synonyms: soaking, sopping |
| drippings | (noun) fat that exudes from meat and drips off while it is being roasted or fried | - |
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| drippy | (adjective) effusively or insincerely emotional | Synonyms: bathetic, hokey, kitschy, maudlin, mawkish, mushy, sappy, schmaltzy, schmalzy, sentimental, slushy, soppy, soupy |
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| (adjective) leaking in drops | - |
| (adjective) wet with light rain | Synonyms: drizzly |
| dripstone | (noun) a protective drip that is made of stone | Synonyms: hoodmold, hoodmould |
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| (noun) the form of calcium carbonate found in stalactites and stalagmites | - |
| drive | (noun) a journey in a vehicle (usually an automobile) | Synonyms: ride |
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| (noun) a series of actions advancing a principle or tending toward a particular end | Synonyms: campaign, cause, crusade, effort, movement |
| (noun) hitting a golf ball off of a tee with a driver | Synonyms: driving |
| (noun) the act of applying force to propel something | Synonyms: driving force, thrust |
| (noun) (sports) a hard straight return (as in tennis or squash) | - |
| (noun) the act of driving a herd of animals overland | - |
| (noun) a wide scenic road planted with trees | Synonyms: parkway |
| (noun) a road leading up to a private house | Synonyms: driveway, private road |
| (noun) a mechanism by which force or power is transmitted in a machine | - |
| (noun) (computer science) a device that writes data onto or reads data from a storage medium | - |
| (noun) the trait of being highly motivated | - |
| (noun) a physiological state corresponding to a strong need or desire | - |
| (verb) move into a desired direction of discourse | Synonyms: aim, get |
| (verb) (hunting) chase from cover into more open ground | - |
| (verb) (hunting) search for game | - |
| (verb) cause to function by supplying the force or power for or by controlling | - |
| (verb) force into or from an action or state, either physically or metaphorically | Synonyms: force, ram |
| (verb) cause to move rapidly by striking or throwing with force | - |
| (verb) hit very hard, as by swinging a bat horizontally | - |
| (verb) strike with a driver, as in teeing off | - |
| (verb) excavate horizontally | - |
| (verb) push, propel, or press with force | - |
| (verb) cause to move back by force or influence | Synonyms: beat back, force back, push back, repel, repulse |
| (verb) compel somebody to do something, often against his own will or judgment | - |
| (verb) travel or be transported in a vehicle | Synonyms: motor |
| (verb) operate or control a vehicle | - |
| (verb) cause someone or something to move by driving | - |
| (verb) move by being propelled by a force | - |
| (verb) urge forward | - |
| (verb) proceed along in a vehicle | Synonyms: take |
| (verb) strive and make an effort to reach a goal | Synonyms: labor, labour, push, tug |
| (verb) to compel or force or urge relentlessly or exert coercive pressure on, or motivate strongly | - |
| (verb) work as a driver | - |
| (verb) have certain properties when driven | Synonyms: ride |
| drivel | (noun) saliva spilling from the mouth | Synonyms: dribble, drool, slobber |
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| (noun) a worthless message | Synonyms: garbage |
| (verb) let saliva drivel from the mouth | Synonyms: dribble, drool, slabber, slaver, slobber |
| driveller | (noun) someone whose talk is trivial drivel | Synonyms: jabberer |
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| (noun) a person who dribbles | Synonyms: dribbler, drooler, slobberer |
| driven | (adjective) strongly motivated to succeed | Synonyms: compulsive, determined |
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| (adjective) compelled forcibly by an outside agency | Synonyms: goaded |
| (adjective) urged or forced to action through moral pressure | Synonyms: impelled |
| driver | (noun) a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee | Synonyms: number one wood |
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| (noun) (computer science) a program that determines how a computer will communicate with a peripheral device | Synonyms: device driver |
| (noun) the operator of a motor vehicle | - |
| (noun) a golfer who hits the golf ball with a driver | - |
| (noun) someone who drives animals that pull a vehicle | - |
| driveshaft | (noun) a rotating shaft that transmits power from the engine to the point of application | - |
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| driveway | (noun) a road leading up to a private house | Synonyms: drive, private road |
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| driving | (adjective) having the power of driving or impelling | Synonyms: impulsive |
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| (adjective) acting with vigor | - |
| (noun) the act of controlling and steering the movement of a vehicle or animal | - |
| (noun) hitting a golf ball off of a tee with a driver | Synonyms: drive |
| drizzle | (noun) very light rain; stronger than mist but less than a shower | Synonyms: mizzle |
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| (verb) moisten with fine drops | Synonyms: moisten |
| (verb) rain lightly | Synonyms: mizzle |
| drizzling | (adjective) (of rain) falling lightly in very small drops | - |
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| drizzly | (adjective) wet with light rain | Synonyms: drippy |
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| eldritch | (adjective) suggesting the operation of supernatural influences | Synonyms: uncanny, unearthly, weird |
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| ephedrine | (noun) white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma | - |
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| escadrille | (noun) an air force squadron typically containing six airplanes (as in France during World War I) | - |
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| (noun) a small squadron | - |
| espadrille | (noun) a sandal with a sole made of rope or rubber and a cloth upper part | - |
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| hydric | (adjective) having or characterized by excessive moisture | - |
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| hydride | (noun) any binary compound formed by the union of hydrogen and other elements | - |
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| hydrilla | (noun) submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways | Synonyms: Hydrilla verticillata |
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| hypochondria | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondriasis |
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| hypochondriac | (adjective) suffering from hypochondria | Synonyms: hypochondriacal |
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| (noun) a patient with imaginary symptoms and ailments | - |
| hypochondriacal | (adjective) suffering from hypochondria | Synonyms: hypochondriac |
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| hypochondriasis | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondria |
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| hypochondrium | (noun) the upper region of the abdomen just below the lowest ribs on either side of the epigastrium | - |
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| indri | (noun) large short-tailed lemur of Madagascar having thick silky fur in black and white and fawn | Synonyms: Indri brevicaudatus, Indri indri, indris |
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| indris | (noun) large short-tailed lemur of Madagascar having thick silky fur in black and white and fawn | Synonyms: indri, Indri brevicaudatus, Indri indri |
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| madrigal | (noun) an unaccompanied partsong for 2 or 3 voices; follows a strict poetic form | - |
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| (verb) sing madrigals | - |
| madrigalist | (noun) a singer of madrigals | - |
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| madrilene | (noun) a tomato-flavored consomme; often served chilled | - |
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| mandril | (noun) any of various rotating shafts that serve as axes for larger rotating parts | Synonyms: arbor, mandrel, spindle |
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| mandrill | (noun) baboon of west Africa with a bright red and blue muzzle and blue hindquarters | Synonyms: Mandrillus sphinx |
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| midrib | (noun) the vein in the center of a leaf | Synonyms: midvein |
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| midriff | (noun) (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration | Synonyms: diaphragm |
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| (noun) the middle area of the human torso (usually in front) | Synonyms: middle, midsection |
| mitochondrion | (noun) an organelle containing enzymes responsible for producing energy | Synonyms: chondriosome |
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| mydriasis | (noun) reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs | - |
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| mydriatic | (noun) a drug that causes the pupil of the eye to dilate; used to aid eye examinations | Synonyms: mydriatic drug |
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| nondrinker | (noun) a person who refrains from drinking intoxicating beverages | Synonyms: abstainer, abstinent |
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| nondriver | (noun) a person who is not a driver | - |
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