| aeriferous | (adjective) conveying air; as the bronchial tubes | - |
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| afferent | (adjective) of nerves and nerve impulses; conveying sensory information from the sense organs to the CNS | - |
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| (noun) a nerve that passes impulses from receptors toward or to the central nervous system | Synonyms: afferent nerve, sensory nerve |
| aluminiferous | (adjective) containing alum or aluminum | - |
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| amentiferous | (adjective) (of plants) bearing or characterized by aments or catkins | Synonyms: amentaceous |
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| aminotransferase | (noun) a class of transferases that catalyze transamination (that transfer an amino group from an amino acid to another compound) | Synonyms: aminopherase, transaminase |
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| antiferromagnet | (noun) any material that has antiferromagnetic properties. | - |
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| antiferromagnetic | (adjective) relating to antiferromagnetism | - |
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| antiferromagnetism | (noun) magnetic field creates parallel but opposing spins; varies with temperature | - |
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| antifertility | (adjective) capable of preventing conception or impregnation | Synonyms: contraceptive, prophylactic |
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| antifertilizin | (noun) An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization. | - |
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| aquifer | (noun) underground bed or layer yielding ground water for wells and springs etc | - |
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| aquiferous | (adjective) of or relating to an aquifer | - |
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| argentiferous | (adjective) containing or yielding silver | - |
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| auriferous | (adjective) containing gold | Synonyms: gold-bearing |
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| bacciferous | (adjective) producing or bearing berries | Synonyms: baccate, berried |
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| bluffer | (noun) a person who tries to bluff other people | Synonyms: four-flusher |
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| buffer | (noun) a cushion-like device that reduces shock due to an impact | Synonyms: fender |
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| (noun) a power tool used to buff surfaces | Synonyms: polisher |
| (noun) an inclined metal frame at the front of a locomotive to clear the track | Synonyms: cowcatcher, fender, pilot |
| (noun) (computer science) a part of RAM used for temporary storage of data that is waiting to be sent to a device; used to compensate for differences in the rate of flow of data between components of a computer system | Synonyms: buffer storage, buffer store |
| (noun) an implement consisting of soft material mounted on a block; used for polishing (as in manicuring) | Synonyms: buff |
| (noun) a neutral zone between two rival powers that is created in order to diminish the danger of conflict | Synonyms: buffer zone |
| (noun) (chemistry) an ionic compound that resists changes in its pH | - |
| (verb) add a buffer (a solution) | - |
| (verb) protect from impact | Synonyms: cushion, soften |
| caffer | (noun) an offensive and insulting term for any Black African | Synonyms: caffre, kaffir, kafir |
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| calciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: cholecalciferol, D, ergocalciferol, viosterol, vitamin D |
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| calciferous | (adjective) bearing or producing or containing calcium or calcium carbonate or calcite | - |
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| candlesnuffer | (noun) an implement with a small cup at the end of a handle; used to extinguish the flame of a candle | - |
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| carboniferous | (adjective) relating to or consisting of or yielding carbon | Synonyms: carbonaceous, carbonic, carbonous |
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| (adjective) of or relating to the Carboniferous geologic era | - |
| chaffer | (verb) talk socially without exchanging too much information | Synonyms: chat, chatter, chew the fat, chit-chat, chitchat, claver, confab, confabulate, gossip, jaw, natter, shoot the breeze, visit |
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| (verb) wrangle (over a price, terms of an agreement, etc.) | Synonyms: haggle, higgle, huckster |
| chamfer | (noun) two surfaces meeting at an angle different from 90 degrees | Synonyms: bevel, cant |
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| (verb) cut a furrow into a columns | Synonyms: chase, furrow |
| (verb) cut a bevel on; shape to a bevel | Synonyms: bevel |
| cheliferous | (adjective) having chelae | - |
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| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| chyliferous | (adjective) transmitting chyle | - |
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| circumference | (noun) the size of something as given by the distance around it | Synonyms: perimeter |
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| (noun) the length of the closed curve of a circle | - |
| (noun) the boundary line encompassing an area or object | Synonyms: circuit |
| circumferent | (adjective) closely encircling | Synonyms: encompassing, surrounding |
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| circumferential | (adjective) lying around or just outside the edges or outskirts | - |
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| cockchafer | (noun) any of various large European beetles destructive to vegetation as both larvae and adult | Synonyms: May beetle, May bug, Melolontha melolontha |
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| coffer | (noun) a chest especially for storing valuables | - |
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| (noun) an ornamental sunken panel in a ceiling or dome | Synonyms: caisson, lacunar |
| cofferdam | (noun) large watertight chamber used for construction under water | Synonyms: caisson, pneumatic caisson |
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| confer | (verb) have a conference in order to talk something over | Synonyms: confab, confabulate, consult |
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| (verb) present | Synonyms: bestow |
| conferee | (noun) a member of a conference | - |
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| (noun) a person on whom something is bestowed | - |
| conference | (noun) a discussion among participants who have an agreed (serious) topic | Synonyms: group discussion |
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| (noun) a prearranged meeting for consultation or exchange of information or discussion (especially one with a formal agenda) | - |
| (noun) an association of sports teams that organizes matches for its members | Synonyms: league |
| conferment | (noun) the act of conferring an honor or presenting a gift | Synonyms: bestowal, bestowment, conferral |
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| conferral | (noun) the act of conferring an honor or presenting a gift | Synonyms: bestowal, bestowment, conferment |
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| conferrer | (noun) person who makes a gift of property | Synonyms: bestower, donor, giver, presenter |
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| (noun) someone who converses or confers (as in a conference) | - |
| conferva | (noun) any of various algae of the genus Tribonema; algae with branching filaments that form scum in still or stagnant fresh water | - |
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| conifer | (noun) any gymnospermous tree or shrub bearing cones | Synonyms: coniferous tree |
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| coniferous | (adjective) of or relating to or part of trees or shrubs bearing cones and evergreen leaves | Synonyms: cone-bearing |
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| coreference | (noun) the grammatical relation between two words that have a common referent | - |
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| coreferent | (adjective) related by sharing a symbolic link to a concrete object or an abstraction | - |
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| coreferential | (adjective) relating to coreference | Synonyms: co-referent |
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| corticoafferent | (adjective) of a nerve fiber or impulse originating outside and passing toward the cerebral cortex | Synonyms: corticipetal |
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| corticoefferent | (adjective) of a nerve fiber passing outward from the cerebral cortex | Synonyms: corticifugal, corticofugal |
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| counteroffer | (noun) an offer made by someone who has rejected a prior offer | - |
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| countertransference | (noun) the psychoanalyst's displacement of emotion onto the patient or more generally the psychoanalyst's emotional involvement in the therapeutic interaction | - |
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| crucifer | (noun) any of various plants of the family Cruciferae | Synonyms: cruciferous plant |
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| cruciferous | (adjective) of or relating to or belonging to the plant family Cruciferae | - |
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| dedifferentiate | (verb) lose specialization in form or function | - |
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| dedifferentiated | (adjective) having experienced or undergone dedifferentiation or the loss of specialization in form or function | - |
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| dedifferentiation | (noun) the loss of specialization in form or function | - |
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| defer | (verb) yield to another's wish or opinion | Synonyms: accede, bow, give in, submit |
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| (verb) hold back to a later time | Synonyms: hold over, postpone, prorogue, put off, put over, remit, set back, shelve, table |
| deference | (noun) a courteous expression (by word or deed) of esteem or regard | Synonyms: respect |
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| (noun) a disposition or tendency to yield to the will of others | Synonyms: complaisance, compliance, compliancy, obligingness |
| (noun) courteous regard for people's feelings | Synonyms: respect, respectfulness |
| deferent | (adjective) showing deference | Synonyms: deferential, regardful |
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| deferential | (adjective) showing deference | Synonyms: deferent, regardful |
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| deferentially | (adverb) in a respectfully deferential manner | - |
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| (adverb) in a servile manner | Synonyms: submissively |
| deferment | (noun) act of putting off to a future time | Synonyms: deferral, postponement |
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| deferral | (noun) act of putting off to a future time | Synonyms: deferment, postponement |
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| (noun) a state of abeyance or suspended business | Synonyms: recess |
| defervesce | (verb) experience an abatement of a fever | - |
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| defervescence | (noun) abatement of a fever as indicated by a reduction in body temperature | - |
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| defervescent | (adjective) of or relating to the reduction of a fever | - |
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| differ | (verb) be of different opinions | Synonyms: disagree, dissent, take issue |
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| (verb) be different | - |
| difference | (noun) the quality of being unlike or dissimilar | - |
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| (noun) a disagreement or argument about something important | Synonyms: conflict, difference of opinion, dispute |
| (noun) a variation that deviates from the standard or norm | Synonyms: departure, deviation, divergence |
| (noun) the number that remains after subtraction; the number that when added to the subtrahend gives the minuend | Synonyms: remainder |
| (noun) a significant change | - |
| different | (adjective) unlike in nature or quality or form or degree | - |
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| (adjective) distinctly separate from the first | - |
| (adjective) differing from all others; not ordinary | - |
| (adjective) distinct or separate | - |
| differentia | (noun) distinguishing characteristics (especially in different species of a genus) | - |
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| differentiable | (adjective) possessing a differential coefficient or derivative | - |
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| (adjective) capable of being perceived as different | - |
| differential | (adjective) relating to or showing a difference | - |
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| (adjective) involving or containing one or more derivatives | - |
| (noun) a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | Synonyms: differential gear |
| (noun) a quality that differentiates between similar things | - |
| (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx | Synonyms: derivative, derived function, differential coefficient, first derivative |
| differentially | (adverb) in a differential manner | - |
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| differentiate | (verb) become distinct and acquire a different character | - |
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| (verb) become different during development | - |
| (verb) evolve so as to lead to a new species or develop in a way most suited to the environment | Synonyms: specialise, specialize, speciate |
| (verb) calculate a derivative; take the derivative | - |
| (verb) mark as different | Synonyms: distinguish, secern, secernate, separate, severalise, severalize, tell, tell apart |
| (verb) be a distinctive feature, attribute, or trait; sometimes in a very positive sense | Synonyms: distinguish, mark |
| differentiated | (adjective) made different (especially in the course of development) or shown to be different | - |
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| (adjective) exhibiting biological specialization; adapted during development to a specific function or environment | - |
| differentiation | (noun) the mathematical process of obtaining the derivative of a function | - |
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| (noun) a discrimination between things as different and distinct on the basis of their characteristics or attributes | Synonyms: distinction |
| (noun) (biology) the structural adaptation of some body part for a particular function | Synonyms: specialisation, specialization |
| differentiator | (noun) a person who (or that which) differentiates | Synonyms: discriminator |
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| differently | (adverb) in another and different manner | Synonyms: otherwise |
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| duffer | (noun) an incompetent or clumsy person | - |
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| efferent | (adjective) of nerves and nerve impulses; conveying information away from the CNS | Synonyms: motorial |
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| (noun) a nerve that conveys impulses toward or to muscles or glands | Synonyms: efferent nerve, motor nerve |
| effervesce | (verb) become bubbly or frothy or foaming | Synonyms: fizz, foam, form bubbles, froth, sparkle |
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| effervescence | (noun) the property of giving off bubbles | Synonyms: bubbliness, frothiness |
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| (noun) the process of bubbling as gas escapes | - |
| effervescent | (adjective) (of a liquid) giving off bubbles | - |
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| (adjective) used of wines and waters; charged naturally or artificially with carbon dioxide | Synonyms: sparkling |
| (adjective) marked by high spirits or excitement | Synonyms: bubbling, frothy, scintillating, sparkly |
| effervescing | (adjective) emitting or filled with bubbles as from carbonation or fermentation | Synonyms: bubbling, bubbly, foaming, foamy, frothy, spumy |
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| ergocalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, viosterol, vitamin D |
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| feral | (adjective) wild and menacing | Synonyms: ferine, savage |
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| fergusonite | (noun) a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals | - |
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| feria | (noun) (in Spanish speaking regions) a local festival or fair, usually in honor of some patron saint | - |
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| (noun) a weekday on which no festival or holiday is celebrated | - |
| ferial | (adjective) of or relating to or being a feria | - |
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| ferine | (adjective) wild and menacing | Synonyms: feral, savage |
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| fermata | (noun) (music) a prolongation of unspecified length on a note or chord or rest | - |
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| (noun) a musical notation (over a note or chord or rest) that indicates it is to be prolonged by an unspecified amount | - |
| ferment | (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: fermentation, fermenting, zymolysis, zymosis |
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| (noun) a state of agitation or turbulent change or development | Synonyms: agitation, fermentation, tempestuousness, unrest |
| (noun) a substance capable of bringing about fermentation | - |
| (verb) go sour or spoil | Synonyms: sour, turn, work |
| (verb) cause to undergo fermentation | Synonyms: work |
| (verb) work up into agitation or excitement | - |
| (verb) be in an agitated or excited state | - |
| fermentable | (adjective) capable of being fermented | - |
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| fermentation | (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: ferment, fermenting, zymolysis, zymosis |
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| (noun) a state of agitation or turbulent change or development | Synonyms: agitation, ferment, tempestuousness, unrest |
| fermenting | (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: ferment, fermentation, zymolysis, zymosis |
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| fermentologist | (noun) a specialist in wine making | Synonyms: enologist, oenologist |
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| fermi | (noun) a metric unit of length equal to one quadrillionth of a meter | Synonyms: femtometer, femtometre |
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| fermion | (noun) any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle | - |
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| fermium | (noun) a radioactive transuranic metallic element produced by bombarding plutonium with neutrons | Synonyms: atomic number 100, Fm |
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| fern | (noun) any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores | - |
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| ferned | (adjective) abounding in or covered with ferns | Synonyms: ferny |
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| fernless | (adjective) devoid of ferns | - |
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