| acetanilid | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilide, phenylacetamide |
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| acetanilide | (noun) a solid odourless chemical of leaf or flake-like appearance; used in rubber accelerator, dye, and camphor synthesis; metabolised to paracetamol (acetaminophen) | Synonyms: acetanilid, phenylacetamide |
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| alidad | (noun) surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles | Synonyms: alidade |
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| (noun) surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments | Synonyms: alidade |
| alidade | (noun) surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles | Synonyms: alidad |
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| (noun) surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments | Synonyms: alidad |
| annelid | (adjective) relating to or belonging to or characteristic of any worms of the phylum Annelida | Synonyms: annelidan |
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| (noun) worms with cylindrical bodies segmented both internally and externally | Synonyms: annelid worm, segmented worm |
| annelidan | (adjective) relating to or belonging to or characteristic of any worms of the phylum Annelida | Synonyms: annelid |
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| archiannelid | (noun) small primitive marine worm lacking external segmentation and resembling polychaete larvae | - |
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| backslide | (verb) drop to a lower level, as in one's morals or standards | Synonyms: lapse |
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| backslider | (noun) someone who lapses into previous undesirable patterns of behavior | Synonyms: recidivist, reversionist |
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| backsliding | (noun) a failure to maintain a higher state | Synonyms: lapse, lapsing, relapse, relapsing, reversion, reverting |
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| bolide | (noun) an especially luminous meteor (sometimes exploding) | Synonyms: fireball |
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| ceilidh | (noun) an informal social gathering at which there is Scottish or Irish folk music and singing and folk dancing and story telling | - |
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| chlorobenzylidenemalononitrile | (noun) a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema | Synonyms: CS gas |
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| chlorthalidone | (noun) a diuretic (trade names Hygroton and Thalidone) used to control hypertension and conditions that cause edema; effective in lowering blood pressure to prevent heart attacks | Synonyms: Hygroton, Thalidone |
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| chrysomelid | (noun) brightly colored beetle that feeds on plant leaves; larvae infest roots and stems | Synonyms: leaf beetle |
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| cichlid | (noun) freshwater fishes of tropical America and Africa and Asia similar to American sunfishes; some are food fishes; many small ones are popular in aquariums | Synonyms: cichlid fish |
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| collide | (verb) crash together with violent impact | Synonyms: clash |
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| (verb) cause to collide | - |
| (verb) be incompatible; be or come into conflict | Synonyms: clash, jar |
| collider | (noun) an accelerator in which two beams of particles are forced to collide head on | - |
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| comatulid | (noun) free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms | Synonyms: feather star |
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| consolidate | (verb) unite into one | - |
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| (verb) bring together into a single whole or system | - |
| (verb) make firm or secure; strengthen | - |
| (verb) make or form into a solid or hardened mass | - |
| (verb) form into a solid mass or whole | - |
| consolidated | (adjective) forming a solid mass | - |
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| (adjective) joined together into a whole | Synonyms: amalgamate, amalgamated, coalesced, fused |
| consolidation | (noun) the act of combining into an integral whole | Synonyms: integration |
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| (noun) combining into a solid mass | - |
| (noun) something that has consolidated into a compact mass | - |
| consolidative | (adjective) tending to consolidate | Synonyms: integrative |
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| (adjective) combining into a single unit | Synonyms: unifying |
| elide | (verb) leave or strike out | - |
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| euclidean | (adjective) relating to geometry as developed by Euclid | Synonyms: euclidian |
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| euclidian | (adjective) relating to geometry as developed by Euclid | Synonyms: euclidean |
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| exaltolide | (noun) the macrocyclic lactone having fifteen carbon atoms; it has a musky scent, similar to exaltone. | - |
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| eyelid | (noun) either of two folds of skin that can be moved to cover or open the eye | Synonyms: lid, palpebra |
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| felid | (noun) any of various lithe-bodied roundheaded fissiped mammals, many with retractile claws | Synonyms: feline |
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| gelid | (adjective) extremely cold | Synonyms: arctic, frigid, glacial, icy, polar |
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| gelidity | (noun) coldness due to a cold environment | Synonyms: chill, iciness |
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| gempylid | (noun) snake mackerels; elongated marine fishes with oily flesh; resembles mackerels; found worldwide | - |
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| glide | (noun) the act of moving smoothly along a surface while remaining in contact with it | Synonyms: coast, slide |
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| (noun) the activity of flying a glider | Synonyms: gliding, sailing, sailplaning, soaring |
| (noun) a vowellike sound that serves as a consonant | Synonyms: semivowel |
| (verb) move smoothly and effortlessly | - |
| (verb) fly in or as if in a glider plane | - |
| (verb) cause to move or pass silently, smoothly, or imperceptibly | - |
| glider | (noun) aircraft supported only by the dynamic action of air against its surfaces | Synonyms: sailplane |
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| gliding | (noun) the activity of flying a glider | Synonyms: glide, sailing, sailplaning, soaring |
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| halide | (noun) a salt of any halogen acid | - |
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| holiday | (noun) leisure time away from work devoted to rest or pleasure | Synonyms: vacation |
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| (noun) a day on which work is suspended by law or custom | - |
| (verb) spend or take a vacation | Synonyms: vacation |
| holidaymaker | (noun) someone who travels for pleasure | Synonyms: tourer, tourist |
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| invalid | (adjective) having no cogency or legal force | - |
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| (adjective) no longer valid | - |
| (noun) someone who is incapacitated by a chronic illness or injury | Synonyms: shut-in |
| (verb) injure permanently | Synonyms: disable, handicap, incapacitate |
| (verb) force to retire, remove from active duty, as of firemen | - |
| invalidate | (verb) take away the legal force of or render ineffective | Synonyms: vitiate, void |
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| (verb) show to be invalid | Synonyms: nullify |
| (verb) make invalid for use | Synonyms: cancel |
| (verb) declare invalid | Synonyms: annul, avoid, nullify, quash, void |
| invalidated | (adjective) deprived of legal force | Synonyms: nullified |
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| invalidating | (adjective) establishing as invalid or untrue | Synonyms: disconfirming |
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| invalidation | (noun) (law) a formal termination (of a relationship or a judicial proceeding etc) | Synonyms: annulment |
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| (noun) when a person's thoughts and feelings are rejected, ignored, or judged. | - |
| invalidator | (noun) an official who can invalidate or nullify | Synonyms: nullifier, voider |
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| invalidism | (noun) chronic ill health | - |
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| invalidity | (noun) illogicality as a consequence of having a conclusion that does not follow from the premisses | Synonyms: invalidness |
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| invalidness | (noun) illogicality as a consequence of having a conclusion that does not follow from the premisses | Synonyms: invalidity |
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| landslide | (noun) a slide of a large mass of dirt and rock down a mountain or cliff | Synonyms: landslip |
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| (noun) an overwhelming electoral victory | - |
| leptodactylid | (noun) toothed frogs: terrestrial or aquatic or arboreal | Synonyms: leptodactylid frog |
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| lid | (noun) a movable top or cover (hinged or separate) for closing the opening at the top of a box, chest, jar, pan, etc. | - |
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| (noun) headdress that protects the head from bad weather; has shaped crown and usually a brim | Synonyms: chapeau, hat |
| (noun) either of two folds of skin that can be moved to cover or open the eye | Synonyms: eyelid, palpebra |
| lidar | (noun) a measuring system that detects and locates objects on the same principle as radar but uses light from a laser; a potential technology for detecting air turbulence that can affect aircraft | - |
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| lidded | (adjective) having or covered with a lid or lids; often used in combination | - |
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| (adjective) having a lid | - |
| lidless | (adjective) not having or covered with a lid or lids | - |
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| (adjective) always watchful | Synonyms: sleepless |
| (adjective) having no lid | - |
| lido | (noun) a recreational facility including a swimming pool for water sports | - |
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| machilid | (noun) wingless insect living in dark moist places as under dead tree trunks; they make erratic leaps when disturbed | Synonyms: jumping bristletail |
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| millidegree | (noun) a unit of temperature equal to one-thousandth of a degree | - |
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| mudslide | (noun) a landslide of mud | - |
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| mustelid | (noun) fissiped fur-bearing carnivorous mammals | Synonyms: musteline, musteline mammal |
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| mytilid | (noun) marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones | Synonyms: marine mussel |
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| nymphalid | (noun) medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast | Synonyms: brush-footed butterfly, four-footed butterfly, nymphalid butterfly |
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| pallid | (adjective) abnormally deficient in color as suggesting physical or emotional distress | Synonyms: pale, wan |
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| (adjective) lacking in vitality or interest or effectiveness | Synonyms: pale |
| (adjective) (of light) lacking in intensity or brightness; dim or feeble | Synonyms: pale, sick, wan |
| pallidity | (noun) being deficient in color | Synonyms: paleness |
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| pallidly | (adverb) in a manner lacking interest or vitality | Synonyms: dimly, palely |
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| pallidness | (noun) unnatural lack of color in the skin (as from bruising or sickness or emotional distress) | Synonyms: achromasia, lividity, lividness, luridness, paleness, pallor, wanness |
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| pallidum | (noun) the inner pale yellow part of the lenticular nucleus | Synonyms: globus pallidus, paleostriatum |
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| paragliding | (noun) gliding in a parasail | Synonyms: parasailing |
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| phencyclidine | (noun) a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen | Synonyms: angel dust, PCP, phencyclidine hydrochloride |
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| procyclidine | (noun) drug (trade name Kemadrin) used to reduce tremors in Parkinsonism | Synonyms: Kemadrin |
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| psyllid | (noun) small active cicada-like insect with hind legs adapted for leaping; feeds on plant juices | Synonyms: jumping plant louse, psylla |
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| pyralid | (noun) usually tropical slender-bodied long-legged moth whose larvae are crop pests | Synonyms: pyralid moth |
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| regnellidium | (noun) small latex-containing aquatic fern of southern Brazil | Synonyms: Regnellidium diphyllum |
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| rockslide | (noun) a landslide of rocks | - |
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| semisolid | (adjective) partly solid; having a rigidity and viscosity intermediate between a solid and a liquid | - |
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| sipunculid | (noun) small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut | Synonyms: peanut worm |
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| slide | (noun) the act of moving smoothly along a surface while remaining in contact with it | Synonyms: coast, glide |
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| (noun) sloping channel through which things can descend | Synonyms: chute, slideway, sloping trough |
| (noun) a transparency mounted in a frame; viewed with a slide projector | Synonyms: lantern slide |
| (noun) a small flat rectangular piece of glass on which specimens can be mounted for microscopic study | Synonyms: microscope slide |
| (noun) plaything consisting of a sloping chute down which children can slide | Synonyms: playground slide, sliding board |
| (noun) (music) rapid sliding up or down the musical scale | Synonyms: swoop |
| (noun) (geology) the descent of a large mass of earth or rocks or snow etc. | - |
| (verb) to pass or move unobtrusively or smoothly | Synonyms: slither |
| (verb) move obliquely or sideways, usually in an uncontrolled manner | Synonyms: skid, slew, slip, slue |
| (verb) move smoothly along a surface | - |
| slider | (noun) a fastball that curves slightly away from the side from which it was thrown | - |
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| (noun) freshwater turtle of United States and South America; frequently raised commercially; some young sold as pets | Synonyms: Pseudemys scripta, yellow-bellied terrapin |
| (noun) someone who races the luge | Synonyms: luger |
| (noun) a person who slips or slides because of loss of traction | Synonyms: skidder, slipper |
| slideway | (noun) sloping channel through which things can descend | Synonyms: chute, slide, sloping trough |
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| sliding | (adjective) being a smooth continuous motion | - |
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| solid | (adjective) of definite shape and volume; firm; neither liquid nor gaseous | - |
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| (adjective) entirely of one substance with no holes inside | - |
| (adjective) having length, breadth and thickness | - |
| (adjective) characterized by good substantial quality | - |
| (adjective) not soft or yielding to pressure | Synonyms: firm |
| (adjective) of one substance or character throughout | - |
| (adjective) impenetrable for the eye | - |
| (adjective) meriting respect or esteem | Synonyms: upstanding |
| (adjective) of a substantial character and not frivolous or superficial | - |
| (adjective) financially dependable | - |
| (adjective) of good quality and condition; solidly built | Synonyms: strong, substantial |
| (adjective) uninterrupted in space; having no gaps or breaks | - |
| (adjective) acting together as a single undiversified whole | Synonyms: unanimous, whole |
| (adjective) providing abundant nourishment | Synonyms: hearty, satisfying, square, substantial |
| (adjective) of the same color throughout | Synonyms: self-colored, self-coloured |
| (noun) a three-dimensional object, structurally rigid, usually resistant to changes of shape or volume | - |
| (noun) the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape | Synonyms: solid state, solidness |
| (noun) matter that is solid at room temperature and pressure | - |
| solidarity | (noun) a union of interests or purposes or sympathies among members of a group | - |
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| solidification | (noun) the process of becoming hard or solid by cooling or drying or crystallization | Synonyms: curing, hardening, set, solidifying |
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| solidified | (adjective) changed into a solid mass | Synonyms: coagulated |
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| solidify | (verb) become solid | - |
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| (verb) make solid or more solid; cause to solidify | - |
| solidifying | (noun) the process of becoming hard or solid by cooling or drying or crystallization | Synonyms: curing, hardening, set, solidification |
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| solidity | (noun) the quality of being solid and reliable financially or factually or morally | Synonyms: solidness |
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| (noun) the consistency of a solid | Synonyms: solidness |
| (noun) state of having the interior filled with matter | - |
| solidly | (adverb) with strength and soundness | - |
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| (adverb) as an undiversified whole | - |
| solidness | (noun) the quality of being substantial or having substance | Synonyms: substantiality, substantialness |
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| (noun) the quality of being solid and reliable financially or factually or morally | Synonyms: solidity |
| (noun) the consistency of a solid | Synonyms: solidity |
| (noun) the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape | Synonyms: solid, solid state |
| solidus | (noun) a punctuation mark (/) used to separate related items of information | Synonyms: diagonal, separatrix, slash, stroke, virgule |
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| (noun) a gold coin of the Byzantine Empire; widely circulated in Europe in the Middle Ages | Synonyms: bezant, bezzant, byzant |
| squalid | (adjective) foul and run-down and repulsive | Synonyms: flyblown, sordid |
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| (adjective) morally degraded | Synonyms: seamy, seedy, sleazy, sordid |
| squalidly | (adverb) in a sordid or squalid way | Synonyms: sordidly |
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| squalidness | (noun) sordid dirtiness | Synonyms: sordidness, squalor |
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| stolid | (adjective) having or revealing little emotion or sensibility; not easily aroused or excited | Synonyms: impassive |
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| stolidity | (noun) an indifference to pleasure or pain | Synonyms: stoicism, stolidness |
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| (noun) apathy demonstrated by an absence of emotional reactions | Synonyms: emotionlessness, impassiveness, impassivity, indifference, phlegm, unemotionality |
| stolidly | (adverb) in a stolid manner | - |
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| stolidness | (noun) an indifference to pleasure or pain | Synonyms: stoicism, stolidity |
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| symphilid | (noun) minute arthropod often infesting the underground parts of truck-garden and greenhouse crops | Synonyms: garden centipede, garden symphilid, Scutigerella immaculata |
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| tetrahalide | (noun) any halide containing four halogen atoms in its molecules | - |
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| thalidomide | (noun) a sedative and hypnotic drug; withdrawn from sale after discovered to cause severe birth defects because it inhibits angiogenesis | - |
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| trombiculid | (noun) mite that as nymph and adult feeds on early stages of small arthropods but whose larvae are parasitic on terrestrial vertebrates | - |
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| unconsolidated | (adjective) loose and unstratified | - |
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