| acrostic | (noun) a puzzle where you fill a square grid with words reading the same down as across | Synonyms: word square |
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| (noun) verse in which certain letters such as the first in each line form a word or message | - |
| adrenosterone | (noun) a steroid having androgenic activity; obtained from the cortex of the adrenal gland | - |
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| agnostic | (noun) a person who claims that they cannot have true knowledge about the existence of God (but does not deny that God might exist) | - |
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| (noun) someone who is doubtful or noncommittal about something | Synonyms: doubter |
| agnosticism | (noun) the disbelief in any claims of ultimate knowledge | Synonyms: scepticism, skepticism |
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| (noun) a religious orientation of doubt; a denial of ultimate knowledge of the existence of God | - |
| airpost | (noun) a system of conveying mail by aircraft | Synonyms: airmail |
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| aldosterone | (noun) a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance | - |
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| aldosteronism | (noun) a condition caused by overproduction of aldosterone | Synonyms: hyperaldosteronism |
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| alecost | (noun) tansy-scented Eurasian perennial herb with buttonlike yellow flowers; used as potherb or salad green and sometimes for potpourri or tea or flavoring; sometimes placed in genus Chrysanthemum | Synonyms: balsam herb, bible leaf, Chrysanthemum balsamita, costmary, mint geranium, Tanacetum balsamita |
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| altostratus | (noun) a stratus cloud at an intermediate altitude of 2 or 3 miles | Synonyms: altostratus cloud |
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| anagnost | (noun) a cleric in the minor orders of the Eastern Orthodox Church who reads the lessons aloud in the liturgy (analogous to the lector in the Roman Catholic Church) | - |
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| androsterone | (noun) an androgenic hormone that is less active than testosterone | - |
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| angostura | (noun) the bitter bark of a South American tree; used in medicines and liqueurs and bitters | Synonyms: angostura bark |
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| apostasy | (noun) the act of abandoning a party for cause | Synonyms: tergiversation |
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| (noun) the state of having rejected your religious beliefs for your political party or a cause (often in favor of opposing beliefs or causes) | Synonyms: defection, renunciation |
| apostate | (noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc. | Synonyms: deserter, ratter, recreant, renegade, turncoat |
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| apostle | (noun) an ardent early supporter of a cause or reform | - |
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| apostleship | (noun) the position of apostle | - |
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| apostrophe | (noun) address to an absent or imaginary person | - |
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| (noun) the mark (') used to indicate the omission of one or more letters from a printed word | - |
| autostereotype | (noun) the standardized mental picture held in common by members of a cultural group depicting an oversimplified image of themselves and their behaviour. | - |
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| autostrada | (noun) an expressway in an Italian-speaking country | - |
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| bacteriostasis | (noun) inhibition of the growth of bacteria | - |
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| bacteriostat | (noun) a chemical or biological material that inhibits bacterial growth | - |
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| balanoposthitis | (noun) inflammation of both the head of the penis and the foreskin | - |
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| bedpost | (noun) any of 4 vertical supports at the corners of a bedstead | - |
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| biostatistics | (noun) a branch of biology that studies biological phenomena and observations by means of statistical analysis | Synonyms: biometrics, biometry |
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| boost | (noun) the act of giving hope or support to someone | Synonyms: encouragement |
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| (noun) the act of giving a push | - |
| (noun) an increase in cost | Synonyms: cost increase, hike, rise |
| booster | (noun) an additional dose that makes sure the first dose was effective | Synonyms: booster dose, booster shot, recall dose |
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| (noun) the first stage of a multistage rocket | Synonyms: booster rocket, booster unit, takeoff booster, takeoff rocket |
| (noun) an amplifier for restoring the strength of a transmitted signal | Synonyms: booster amplifier, booster station, relay link, relay station, relay transmitter |
| (noun) a thief who steals goods that are in a store | Synonyms: lifter, shoplifter |
| (noun) someone who is an active supporter and advocate | Synonyms: plugger, promoter |
| (noun) a person who backs a politician or a team etc. | Synonyms: admirer, champion, friend, protagonist, supporter |
| catostomid | (noun) a cypriniform fish of the family Catostomidae | - |
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| cirrostratus | (noun) a thin uniform layer of hazy cloud at high altitude | Synonyms: cirrostratus cloud |
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| clostridia | (noun) spindle-shaped bacterial cell especially one swollen at the center by an endospore | Synonyms: clostridium |
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| clostridium | (noun) spindle-shaped bacterial cell especially one swollen at the center by an endospore | Synonyms: clostridia |
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| coelostat | (noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror | - |
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| colostomy | (noun) a surgical operation that creates an opening from the colon to the surface of the body to function as an anus | - |
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| colostrum | (noun) milky fluid secreted for the first day or two after parturition | Synonyms: foremilk |
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| compost | (noun) a mixture of decaying vegetation and manure; used as a fertilizer | - |
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| corticosteroid | (noun) a steroid hormone produced by the adrenal cortex or synthesized; administered as drugs they reduce swelling and decrease the body's immune response | Synonyms: adrenal cortical steroid, corticoid |
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| corticosterone | (noun) secreted by the adrenal cortex; involved in regulating water and electrolyte balance in the body | - |
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| cost | (noun) the property of having material worth (often indicated by the amount of money something would bring if sold) | Synonyms: monetary value, price |
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| (noun) value measured by what must be given or done or undergone to obtain something | Synonyms: price, toll |
| (noun) the total spent for goods or services including money and time and labor | - |
| costa | (noun) any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates) | Synonyms: rib |
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| (noun) a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing) | - |
| costalgia | (noun) pain in the chest caused by inflammation of the muscles between the ribs | Synonyms: pleuralgia, pleurodynia |
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| costermonger | (noun) a hawker of fruit and vegetables from a barrow | Synonyms: barrow-boy, barrow-man |
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| costia | (noun) a flagellate that is the cause of the frequently fatal fish disease costiasis | Synonyms: Costia necatrix |
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| costiasis | (noun) a fatal disease of freshwater fish caused by a flagellated protozoan invading the skin | - |
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| costing | (noun) cost accounting | - |
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| costliness | (noun) the quality possessed by something with a great price or value | Synonyms: dearness, preciousness |
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| costmary | (noun) leaves used sparingly (because of bitter overtones) in sauces and soups and stuffings | - |
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| (noun) tansy-scented Eurasian perennial herb with buttonlike yellow flowers; used as potherb or salad green and sometimes for potpourri or tea or flavoring; sometimes placed in genus Chrysanthemum | Synonyms: alecost, balsam herb, bible leaf, Chrysanthemum balsamita, mint geranium, Tanacetum balsamita |
| costochondritis | (noun) inflammation at the junction of a rib and its cartilage | - |
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| costs | (noun) pecuniary reimbursement to the winning party for the expenses of litigation | - |
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| costume | (noun) the attire worn in a play or at a fancy dress ball | - |
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| (noun) the attire characteristic of a country or a time or a social class | - |
| (noun) unusual or period attire not characteristic of or appropriate to the time and place | - |
| (noun) the prevalent fashion of dress (including accessories and hair style as well as garments) | - |
| costumer | (noun) someone who designs or supplies costumes (as for a play or masquerade) | Synonyms: costume designer, costumier |
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| costumier | (noun) someone who designs or supplies costumes (as for a play or masquerade) | Synonyms: costume designer, costumer |
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| costusroot | (noun) annual herb of the eastern Himalayas (Kashmir) having purple florets and a fragrant root that yields a volatile oil used in perfumery and for preserving furs | Synonyms: Saussurea costus, Saussurea lappa |
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| cryostat | (noun) a thermostat that operates at very low temperatures | - |
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| cyclostome | (noun) primitive aquatic vertebrate | - |
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| cyclostyle | (noun) a writing implement with a small toothed wheel that cuts small holes in a stencil | - |
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| cytostome | (noun) mouth of a protozoan | - |
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| defroster | (noun) heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane) | Synonyms: deicer |
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| diagnostician | (noun) a doctor who specializes in medical diagnosis | Synonyms: pathologist |
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| diagnostics | (noun) the branch of medical science dealing with the classification of disease | Synonyms: nosology |
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| dictostylium | (noun) any slime mold of the genus Dictostylium | - |
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| dihydrostreptomycin | (noun) antibiotic consisting of a hydrogenated form of streptomycin; used against tuberculosis and tularemia and Gram-negative organisms | - |
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| doorpost | (noun) a jamb for a door | Synonyms: doorjamb |
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| electrostatics | (noun) the branch of physics that deals with static electricity | - |
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| endosteum | (noun) vascular membrane that lines the inner surface of long bones | - |
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| enterostenosis | (noun) abnormal narrowing of the intestine | - |
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| enterostomy | (noun) surgical operation that creates a permanent opening through the abdominal wall into the intestine | Synonyms: enterotomy |
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| ergosterol | (noun) a plant sterol that is converted into vitamin D by ultraviolet radiation | - |
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| exostosis | (noun) a benign outgrowth from a bone (usually covered with cartilage) | - |
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| expostulation | (noun) the act of expressing earnest opposition or protest | Synonyms: objection, remonstrance, remonstration |
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| (noun) an exclamation of protest or remonstrance or reproof | - |
| fingerpost | (noun) a guidepost resembling a hand with a pointing index finger | Synonyms: fingerboard |
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| fosterage | (noun) helping someone grow up to be an accepted member of the community | Synonyms: breeding, bringing up, fostering, nurture, raising, rearing, upbringing |
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| (noun) encouragement; aiding the development of something | Synonyms: fostering |
| fostering | (noun) helping someone grow up to be an accepted member of the community | Synonyms: breeding, bringing up, fosterage, nurture, raising, rearing, upbringing |
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| (noun) encouragement; aiding the development of something | Synonyms: fosterage |
| fosterling | (noun) a child who is raised by foster parents | Synonyms: foster-child, foster child |
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| frost | (noun) weather cold enough to cause freezing | Synonyms: freeze |
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| (noun) the formation of frost or ice on a surface | Synonyms: icing |
| (noun) ice crystals forming a white deposit (especially on objects outside) | Synonyms: hoar, hoarfrost, rime |
| frostbite | (noun) destruction of tissue by freezing and characterized by tingling, blistering and possibly gangrene | Synonyms: cryopathy |
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| frostiness | (noun) coldness as evidenced by frost | - |
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| (noun) a silvery-white color | Synonyms: hoariness |
| frosting | (noun) a flavored sugar topping used to coat and decorate cakes | Synonyms: ice, icing |
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| frostweed | (noun) perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts | Synonyms: Crocanthemum canadense, frost-weed, frostwort, Helianthemum canadense |
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| (noun) tall perennial herb having clusters of white flowers; the eastern United States | Synonyms: frost-weed, Verbesina virginica, Virginia crownbeard |
| frostwort | (noun) perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts | Synonyms: Crocanthemum canadense, frost-weed, frostweed, Helianthemum canadense |
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| gastroenterostomy | (noun) surgical creation of an opening between the stomach wall and the small intestines; performed when the normal opening has been eliminated | - |
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| gastrostomy | (noun) surgical creation of an opening through the abdominal wall into the stomach (as for gastrogavage) | - |
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| gatepost | (noun) either of two posts that bound a gate | - |
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| geostrategy | (noun) the branch of geopolitics dealing with strategy | - |
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| ghost | (noun) a mental representation of some haunting experience | Synonyms: shade, specter, spectre, spook, wraith |
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| (noun) a suggestion of some quality | Synonyms: touch, trace |
| (noun) the visible disembodied soul of a dead person | - |
| (noun) a writer who gives the credit of authorship to someone else | Synonyms: ghostwriter |
| ghostfish | (noun) eellike Atlantic bottom fish with large almost vertical mouth | Synonyms: Cryptacanthodes maculatus, wrymouth |
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| ghostliness | (noun) strangeness by virtue of being mysterious and inspiring fear | Synonyms: eeriness |
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| ghostwriter | (noun) a writer who gives the credit of authorship to someone else | Synonyms: ghost |
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| glasnost | (noun) a policy of the Soviet government allowing freer discussion of social problems | - |
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| gnathostome | (noun) a vertebrate animal possessing true jaws | - |
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| goalpost | (noun) one of a pair of posts (usually joined by a crossbar) that are set up as a goal at each end of a playing field | - |
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| guidepost | (noun) a rule or principle that provides guidance to appropriate behavior | Synonyms: guideline, rule of thumb |
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| (noun) a post bearing a sign that gives directions or shows the way | Synonyms: signpost |
| gynostegium | (noun) the crown of the stamen in plants of the genus Asclepias | - |
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| gyrostabiliser | (noun) a stabilizer consisting of a heavy gyroscope that spins on a vertical axis; reduces side-to-side rolling of a ship or plane | Synonyms: gyrostabilizer |
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| gyrostabilizer | (noun) a stabilizer consisting of a heavy gyroscope that spins on a vertical axis; reduces side-to-side rolling of a ship or plane | Synonyms: gyrostabiliser |
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| haemostasia | (noun) surgical procedure of stopping the flow of blood (as with a hemostat) | Synonyms: haemostasis, hemostasia, hemostasis |
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| haemostasis | (noun) surgical procedure of stopping the flow of blood (as with a hemostat) | Synonyms: haemostasia, hemostasia, hemostasis |
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| haemostat | (noun) a surgical instrument that stops bleeding by clamping the blood vessel | Synonyms: hemostat |
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| hemostasia | (noun) surgical procedure of stopping the flow of blood (as with a hemostat) | Synonyms: haemostasia, haemostasis, hemostasis |
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| hemostasis | (noun) surgical procedure of stopping the flow of blood (as with a hemostat) | Synonyms: haemostasia, haemostasis, hemostasia |
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| hemostat | (noun) a surgical instrument that stops bleeding by clamping the blood vessel | Synonyms: haemostat |
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| henroost | (noun) a roost for hens at night | - |
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