| ancillary | (adjective) furnishing added support | Synonyms: accessory, adjunct, adjuvant, appurtenant, auxiliary |
|---|
| angiocardiogram | (noun) a series of X rays representing the action of the heart and its blood vessels after the injection of a radiopaque substance | - |
|---|
| angiocarp | (noun) tree bearing fruit enclosed in a shell or involucre or husk | - |
|---|
| angiocarpic | (adjective) having or being fruit enclosed in a shell or husk | Synonyms: angiocarpous |
|---|
| angiocarpous | (adjective) having or being fruit enclosed in a shell or husk | Synonyms: angiocarpic |
|---|
| angiosarcoma | (noun) a rare malignant neoplasm arising from vascular tissue; usually occurs in the breast and skin and is believed to originate from the endothelial cells of blood vessels | - |
|---|
| angular | (adjective) having angles or an angular shape | Synonyms: angulate |
|---|
| (adjective) measured by an angle or by the rate of change of an angle | - |
| angularity | (noun) the property possessed by a shape that has angles | - |
|---|
| (noun) a shape having one or more sharp angles | Synonyms: angular shape |
| anniversary | (noun) the date on which an event occurred in some previous year (or the celebration of it) | Synonyms: day of remembrance |
|---|
| annular | (adjective) shaped like a ring | Synonyms: annulate, annulated, circinate, doughnut-shaped, ring-shaped, ringed |
|---|
| antennary | (adjective) of or relating to antennae | Synonyms: antennal |
|---|
| antepartum | (adjective) occurring or existing before birth | Synonyms: antenatal, prenatal |
|---|
| antiapartheid | (adjective) opposing the policy of apartheid in South Africa | - |
|---|
| antiarrhythmic | (noun) a drug used to treat an abnormal heart rhythm | Synonyms: antiarrhythmic drug, antiarrhythmic medication |
|---|
| antiauthoritarian | (adjective) opposed to authoritarianism | - |
|---|
| antibaryon | (noun) the antiparticle of a baryon; a hadron with a baryon number of -1 | - |
|---|
| antidiarrheal | (noun) a drug used to control or stop diarrhea | Synonyms: antidiarrheal drug |
|---|
| antiestablishmentarianism | (noun) the doctrine of opposition to the social and political establishment | Synonyms: antiestablishmentism |
|---|
| antilogarithm | (noun) the number of which a given number is the logarithm | Synonyms: antilog |
|---|
| antimacassar | (noun) a piece of ornamented cloth that protects the back of a chair from hair oils | - |
|---|
| antimalarial | (noun) a medicinal drug used to prevent or treat malaria | Synonyms: antimalarial drug |
|---|
| antiparallel | (adjective) (especially of vectors) parallel but oppositely directed | - |
|---|
| antiparticle | (noun) a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy | - |
|---|
| antiphonary | (adjective) relating to or resembling an antiphon or antiphony | Synonyms: antiphonal |
|---|
| (noun) bound collection of antiphons | Synonyms: antiphonal |
| antiquarian | (adjective) of or relating to antiques or antiquities | - |
|---|
| (adjective) of or relating to persons who study or deal in antiques or antiquities | - |
| (noun) an expert or collector of antiquities | Synonyms: antiquary, archaist |
| antiquark | (noun) the antiparticle of a quark | - |
|---|
| antiquary | (noun) an expert or collector of antiquities | Synonyms: antiquarian, archaist |
|---|
| antisubmarine | (adjective) defensive against enemy submarines | - |
|---|
| apar | (noun) South American armadillo with three bands of bony plates | Synonyms: three-banded armadillo, Tolypeutes tricinctus |
|---|
| apart | (adjective) having characteristics not shared by others | - |
|---|
| (adjective) remote and separate physically or socially | Synonyms: isolated, obscure |
| (adverb) not taken into account or excluded from consideration | Synonyms: aside |
| (adverb) into parts or pieces | Synonyms: asunder |
| (adverb) separated or at a distance in place or position or time | - |
| (adverb) one from the other | - |
| (adverb) placed or kept separate and distinct as for a purpose | Synonyms: aside |
| (adverb) away from another or others | - |
| apartheid | (noun) a social policy or racial segregation involving political and economic and legal discrimination against people who are not Whites; the former official policy in South Africa | - |
|---|
| apartment | (noun) a suite of rooms usually on one floor of an apartment house | Synonyms: flat |
|---|
| apiarian | (adjective) relating to bees or beekeeping | - |
|---|
| apiarist | (noun) a farmer who keeps bees for their honey | Synonyms: apiculturist, beekeeper |
|---|
| apiary | (noun) a shed containing a number of beehives | Synonyms: bee house |
|---|
| apocarpous | (adjective) (of ovaries of flowering plants) consisting of carpels that are free from one another as in buttercups or roses | - |
|---|
| apothecary | (noun) a health professional trained in the art of preparing and dispensing drugs | Synonyms: chemist, druggist, pharmacist, pill pusher, pill roller |
|---|
| apparatchik | (noun) a communist who was a member of the administrative system of a communist party | - |
|---|
| (noun) a humorous but derogatory term for an official of a large organization (especially a political organization) | - |
| apparatus | (noun) equipment designed to serve a specific function | Synonyms: setup |
|---|
| (noun) (anatomy) a group of body parts that work together to perform a given function | - |
| apparel | (noun) clothing in general | Synonyms: clothes, dress, wearing apparel |
|---|
| (verb) provide with clothes or put clothes on | Synonyms: clothe, dress, enclothe, fit out, garb, garment, habilitate, raiment, tog |
| appareled | (adjective) dressed or clothed especially in fine attire; often used in combination | Synonyms: attired, dressed, garbed, garmented, habilimented, robed |
|---|
| apparency | (noun) the property of being apparent | Synonyms: apparentness |
|---|
| apparent | (adjective) clearly revealed to the mind or the senses or judgment | Synonyms: evident, manifest, palpable, patent, plain, unmistakable |
|---|
| (adjective) appearing as such but not necessarily so | Synonyms: ostensible, seeming |
| apparently | (adverb) from appearances alone | Synonyms: on the face of it, ostensibly, seemingly |
|---|
| (adverb) unmistakably (`plain' is often used informally for `plainly') | Synonyms: evidently, manifestly, obviously, patently, plain, plainly |
| apparentness | (noun) the property of being apparent | Synonyms: apparency |
|---|
| apparition | (noun) an act of appearing or becoming visible unexpectedly | - |
|---|
| (noun) something existing in perception only | Synonyms: fantasm, phantasm, phantasma, phantom, shadow |
| (noun) the appearance of a ghostlike figure | - |
| (noun) a ghostly appearing figure | Synonyms: fantasm, phantasm, phantasma, phantom, specter, spectre |
| apparitional | (adjective) resembling or characteristic of a phantom | Synonyms: ghostlike, ghostly, phantasmal, spectral, spiritual |
|---|
| appear | (verb) come into sight or view | - |
|---|
| (verb) be issued or published | Synonyms: come out |
| (verb) come into being or existence, or appear on the scene | Synonyms: come along |
| (verb) appear as a character on stage or appear in a play, etc. | - |
| (verb) give a certain impression of being something or having a certain aspect | Synonyms: look, seem |
| (verb) (of a proposition) seem to be true, probable, or apparent | Synonyms: seem |
| (verb) present oneself formally, as before a (judicial) authority | - |
| appearance | (noun) the act of appearing in public view | - |
|---|
| (noun) formal attendance (in court or at a hearing) of a party in an action | Synonyms: appearing, coming into court |
| (noun) pretending that something is the case in order to make a good impression | Synonyms: show |
| (noun) outward or visible aspect of a person or thing | Synonyms: visual aspect |
| (noun) a mental representation | - |
| (noun) the event of coming into sight | - |
| appearing | (noun) formal attendance (in court or at a hearing) of a party in an action | Synonyms: appearance, coming into court |
|---|
| appendicular | (adjective) relating to or consisting of an appendage or appendages; especially the limbs | - |
|---|
| appendicularia | (noun) free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates | - |
|---|
| applecart | (noun) a handcart from which apples and other fruit are sold in the street | - |
|---|
| (noun) the planning that is disrupted when someone `upsets the applecart' | - |
| aquamarine | (noun) a shade of blue tinged with green | Synonyms: aqua, cobalt blue, greenish blue, peacock blue, turquoise |
|---|
| (noun) a transparent variety of beryl that is blue green in color | - |
| aquarium | (noun) a tank or pool or bowl filled with water for keeping live fish and underwater animals | Synonyms: fish tank, marine museum |
|---|
| ar | (noun) a unit of surface area equal to 100 square meters | Synonyms: are |
|---|
| arabesque | (noun) an ornament that interlaces simulated foliage in an intricate design | - |
|---|
| (noun) position in which the dancer has one leg raised behind and arms outstretched in a conventional pose | - |
| arability | (noun) the quality of land that is appropriate for cultivation | - |
|---|
| arable | (adjective) (of farmland) capable of being farmed productively | Synonyms: cultivable, cultivatable, tillable |
|---|
| araceous | (adjective) relating to a plant of the family Araceae | Synonyms: aroid |
|---|
| arachnid | (noun) air-breathing arthropods characterized by simple eyes and four pairs of legs | Synonyms: arachnoid |
|---|
| arachnidian | (adjective) relating to or resembling a member of the class Arachnida | Synonyms: arachnoid, spiderlike, spiderly, spidery |
|---|
| arachnoid | (adjective) relating to or resembling a member of the class Arachnida | Synonyms: arachnidian, spiderlike, spiderly, spidery |
|---|
| (noun) air-breathing arthropods characterized by simple eyes and four pairs of legs | Synonyms: arachnid |
| (noun) the middle of the 3 meninges | Synonyms: arachnoid membrane |
| arachnophobia | (noun) a morbid fear of spiders | - |
|---|
| aragonite | (noun) a mineral form of crystalline calcium carbonate; dimorphic with calcite | - |
|---|
| arak | (noun) any of various strong liquors distilled from the fermented sap of toddy palms or from fermented molasses | Synonyms: arrack |
|---|
| aralia | (noun) any of various plants of the genus Aralia; often aromatic plants having compound leaves and small umbellate flowers | - |
|---|
| arame | (noun) an edible seaweed with a mild flavor | - |
|---|
| araneidal | (adjective) relating to or resembling a spider | Synonyms: araneidan |
|---|
| araneidan | (adjective) relating to or resembling a spider | Synonyms: araneidal |
|---|
| arariba | (noun) Brazilian tree with handsomely marked wood | Synonyms: Centrolobium robustum |
|---|
| araroba | (noun) a bitter yellow powder used to treat skin diseases | Synonyms: chrysarobin, Goa powder |
|---|
| araucaria | (noun) any of several tall South American or Australian trees with large cones and edible seeds | - |
|---|
| arb | (noun) someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential) | Synonyms: arbitrager, arbitrageur |
|---|
| arbalest | (noun) late version of the crossbow with a steel bow | Synonyms: arbalist |
|---|
| arbalist | (noun) late version of the crossbow with a steel bow | Synonyms: arbalest |
|---|
| (noun) archer who uses an arbalest | - |
| arbiter | (noun) someone chosen to judge and decide a disputed issue | Synonyms: arbitrator, umpire |
|---|
| (noun) someone with the power to settle matters at will | Synonyms: supreme authority |
| arbitrable | (adjective) appropriate for or subject to settlement by arbitration | - |
|---|
| arbitrage | (noun) a kind of hedged investment meant to capture slight differences in price; when there is a difference in the price of something on two different markets the arbitrageur simultaneously buys at the lower price and sells at the higher price | - |
|---|
| (verb) practice arbitrage, as in the stock market | - |
| arbitrager | (noun) someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential) | Synonyms: arb, arbitrageur |
|---|
| arbitrageur | (noun) someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential) | Synonyms: arb, arbitrager |
|---|
| arbitral | (adjective) relating to or resulting from arbitration | Synonyms: arbitrational |
|---|
| arbitrament | (noun) the act of deciding as an arbiter; giving authoritative judgment | Synonyms: arbitration, arbitrement |
|---|
| arbitrarily | (adverb) in a random manner | Synonyms: at random, every which way, haphazardly, indiscriminately, randomly, willy-nilly |
|---|
| arbitrariness | (noun) the trait of acting unpredictably and more from whim or caprice than from reason or judgment | Synonyms: capriciousness, flightiness, whimsey, whimsicality, whimsy |
|---|
| arbitrary | (adjective) based on or subject to individual discretion or preference or sometimes impulse or caprice | - |
|---|
| arbitrate | (verb) act between parties with a view to reconciling differences | Synonyms: intercede, intermediate, liaise, mediate |
|---|
| arbitration | (noun) the act of deciding as an arbiter; giving authoritative judgment | Synonyms: arbitrament, arbitrement |
|---|
| (noun) (law) the hearing and determination of a dispute by an impartial referee agreed to by both parties (often used to settle disputes between labor and management) | - |
| arbitrational | (adjective) relating to or resulting from arbitration | Synonyms: arbitral |
|---|
| arbitrative | (adjective) relating to or having the authority to arbitrate | - |
|---|
| arbitrator | (noun) someone chosen to judge and decide a disputed issue | Synonyms: arbiter, umpire |
|---|
| arbitrement | (noun) the act of deciding as an arbiter; giving authoritative judgment | Synonyms: arbitrament, arbitration |
|---|
| arbor | (noun) a framework that supports climbing plants | Synonyms: arbour, bower, pergola |
|---|
| (noun) any of various rotating shafts that serve as axes for larger rotating parts | Synonyms: mandrel, mandril, spindle |
| (noun) tree (as opposed to shrub) | - |
| arboraceous | (adjective) abounding in trees | Synonyms: arboreous, woodsy, woody |
|---|
| arborary | (adjective) of or relating to or formed by trees | Synonyms: arboreal, arborical, arborous |
|---|
| arboreal | (adjective) inhabiting or frequenting trees | Synonyms: arboreous, tree-living |
|---|
| (adjective) of or relating to or formed by trees | Synonyms: arborary, arborical, arborous |
| (adjective) resembling a tree in form and branching structure | Synonyms: arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
| arboreous | (adjective) inhabiting or frequenting trees | Synonyms: arboreal, tree-living |
|---|
| (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
| (adjective) abounding in trees | Synonyms: arboraceous, woodsy, woody |
| arborescent | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arboresque, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
|---|
| arboresque | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
|---|
| arboretum | (noun) a facility where trees and shrubs are cultivated for exhibition | Synonyms: botanical garden |
|---|