| astronautics | (noun) the theory and practice of navigation through air or space | Synonyms: aeronautics |
|---|
| astronavigation | (noun) navigating according to the positions of the stars | Synonyms: celestial navigation |
|---|
| astronomer | (noun) a physicist who studies astronomy | Synonyms: stargazer, uranologist |
|---|
| astronomic | (adjective) relating or belonging to the science of astronomy | Synonyms: astronomical |
|---|
| (adjective) inconceivably large | Synonyms: astronomical, galactic |
| astronomical | (adjective) relating or belonging to the science of astronomy | Synonyms: astronomic |
|---|
| (adjective) inconceivably large | Synonyms: astronomic, galactic |
| astronomically | (adverb) enormously | - |
|---|
| astronomy | (noun) the branch of physics that studies celestial bodies and the universe as a whole | Synonyms: uranology |
|---|
| asynchronism | (noun) the relation that exists when things occur at unrelated times | Synonyms: asynchrony, desynchronisation, desynchronization, desynchronizing |
|---|
| asynchronous | (adjective) not synchronous; not occurring or existing at the same time or having the same period or phase | - |
|---|
| (adjective) (digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itself | - |
| asynchrony | (noun) the relation that exists when things occur at unrelated times | Synonyms: asynchronism, desynchronisation, desynchronization, desynchronizing |
|---|
| asyndeton | (noun) the omission of conjunctions where they would normally be used | - |
|---|
| atomisation | (noun) separating something into fine particles | Synonyms: atomization, fragmentation |
|---|
| (noun) annihilation by reducing something to atoms | Synonyms: atomization |
| atomization | (noun) separating something into fine particles | Synonyms: atomisation, fragmentation |
|---|
| (noun) annihilation by reducing something to atoms | Synonyms: atomisation |
| atonal | (adjective) characterized by avoidance of traditional western tonality | Synonyms: unkeyed |
|---|
| atonalism | (noun) the absence of a key; alternative to the diatonic system | Synonyms: atonality |
|---|
| atonalistic | (adjective) of or relating to atonalism | - |
|---|
| atonality | (noun) the absence of a key; alternative to the diatonic system | Synonyms: atonalism |
|---|
| atonally | (adverb) without tonality | - |
|---|
| atone | (verb) turn away from sin or do penitence | Synonyms: repent |
|---|
| (verb) make amends for | Synonyms: aby, abye, expiate |
| atonement | (noun) the act of atoning for sin or wrongdoing (especially appeasing a deity) | Synonyms: expiation, propitiation |
|---|
| (noun) compensation for a wrong | Synonyms: expiation, satisfaction |
| atonia | (noun) lack of normal muscular tension or tonus | Synonyms: amyotonia, atonicity, atony |
|---|
| atonic | (adjective) (used of syllables) carrying no stress | Synonyms: unaccented |
|---|
| (adjective) characterized by a lack of tonus | - |
| atonicity | (noun) lack of normal muscular tension or tonus | Synonyms: amyotonia, atonia, atony |
|---|
| atony | (noun) lack of normal muscular tension or tonus | Synonyms: amyotonia, atonia, atonicity |
|---|
| attention | (noun) the work of providing treatment for or attending to someone or something | Synonyms: aid, care, tending |
|---|
| (noun) a courteous act indicating affection | - |
| (noun) a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review | - |
| (noun) the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others | Synonyms: attending |
| (noun) the faculty or power of mental concentration | - |
| (noun) a general interest that leads people to want to know more | - |
| attentional | (adjective) of or relating to attention | - |
|---|
| attenuation | (noun) the property of something that has been weakened or reduced in thickness or density | - |
|---|
| (noun) weakening in force or intensity | Synonyms: fading |
| attestation | (noun) the action of bearing witness | - |
|---|
| (noun) the evidence by which something is attested | - |
| attosecond | (noun) one quintillionth (10^-18) of a second; one thousandth of a femtosecond | - |
|---|
| attraction | (noun) the quality of arousing interest; being attractive or something that attracts | Synonyms: attractiveness |
|---|
| (noun) a characteristic that provides pleasure and attracts | Synonyms: attracter, attractive feature, attractor, magnet |
| (noun) an entertainment that is offered to the public | - |
| (noun) an entertainer who attracts large audiences | Synonyms: attracter, attractor, draw, drawing card |
| (noun) the force by which one object attracts another | Synonyms: attractive force |
| attribution | (noun) assigning to a cause or source | Synonyms: ascription |
|---|
| (noun) assigning some quality or character to a person or thing | Synonyms: ascription |
| attrition | (noun) the act of rubbing together; wearing something down by friction | - |
|---|
| (noun) a wearing down to weaken or destroy | - |
| (noun) sorrow for sin arising from fear of damnation | Synonyms: contriteness, contrition |
| (noun) the wearing down of rock particles by friction due to water or wind or ice | Synonyms: abrasion, detrition, grinding |
| (noun) erosion by friction | Synonyms: abrasion, corrasion, detrition |
| attritional | (adjective) relating to or caused by attrition | - |
|---|
| auction | (noun) the public sale of something to the highest bidder | Synonyms: auction sale, vendue |
|---|
| (noun) a variety of bridge in which tricks made in excess of the contract are scored toward game; now generally superseded by contract bridge | Synonyms: auction bridge |
| (verb) sell at an auction | Synonyms: auction off, auctioneer |
| auctioneer | (noun) an agent who conducts an auction | - |
|---|
| (verb) sell at an auction | Synonyms: auction, auction off |
| audition | (noun) a test of the suitability of a performer | Synonyms: tryout |
|---|
| (noun) the ability to hear; the auditory faculty | Synonyms: auditory modality, auditory sense, hearing, sense of hearing |
| (verb) perform in order to get a role | Synonyms: try out |
| augmentation | (noun) the act of augmenting | - |
|---|
| (noun) the statement of a theme in notes of greater duration (usually twice the length of the original) | - |
| (noun) the amount by which something becomes greater | - |
| auscultation | (noun) listening to sounds within the body (usually with a stethoscope) | - |
|---|
| authentication | (noun) validating the authenticity of something or someone | Synonyms: certification |
|---|
| (noun) a mark on an article of trade to indicate its origin and authenticity | Synonyms: assay-mark, hallmark |
| authorisation | (noun) the act of conferring legality or sanction or formal warrant | Synonyms: authorization, empowerment |
|---|
| (noun) the power or right to give orders or make decisions | Synonyms: authority, authorization, dominance, potency, say-so |
| (noun) official permission or approval | Synonyms: authority, authorization, sanction |
| (noun) a document giving an official instruction or command | Synonyms: authorization, mandate |
| authorization | (noun) the act of conferring legality or sanction or formal warrant | Synonyms: authorisation, empowerment |
|---|
| (noun) the power or right to give orders or make decisions | Synonyms: authorisation, authority, dominance, potency, say-so |
| (noun) official permission or approval | Synonyms: authorisation, authority, sanction |
| (noun) a document giving an official instruction or command | Synonyms: authorisation, mandate |
| autochthon | (noun) the earliest known inhabitants of a region | - |
|---|
| autochthonal | (adjective) originating where it is found | Synonyms: autochthonic, autochthonous, endemic, indigenous |
|---|
| autochthonic | (adjective) originating where it is found | Synonyms: autochthonal, autochthonous, endemic, indigenous |
|---|
| autochthonous | (adjective) of rocks, deposits, etc.; found where they and their constituents were formed | - |
|---|
| (adjective) originating where it is found | Synonyms: autochthonal, autochthonic, endemic, indigenous |
| autochthony | (noun) nativeness by virtue of originating or occurring naturally (as in a particular place) | Synonyms: endemism, indigenousness |
|---|
| automation | (noun) the act of implementing the control of equipment with advanced technology; usually involving electronic hardware | Synonyms: mechanisation, mechanization |
|---|
| (noun) equipment used to achieve automatic control or operation | - |
| (noun) the condition of being automatically operated or controlled | - |
| automaton | (noun) a mechanism that can move automatically | Synonyms: golem, robot |
|---|
| (noun) a machine that operates on its own without the need for human control | - |
| (noun) someone who acts or responds in a mechanical or apathetic way | Synonyms: zombi, zombie |
| automatonlike | (adjective) resembling the unthinking functioning of a machine | Synonyms: automatic, machinelike, robotic, robotlike |
|---|
| autonomic | (adjective) relating to or controlled by the autonomic nervous system | - |
|---|
| autonomous | (adjective) (of political bodies) not controlled by outside forces | Synonyms: independent, self-governing, sovereign |
|---|
| (adjective) (of persons) free from external control and constraint in e.g. action and judgment | Synonyms: self-directed, self-reliant |
| (adjective) existing as an independent entity | - |
| autonomy | (noun) immunity from arbitrary exercise of authority: political independence | Synonyms: liberty |
|---|
| (noun) personal independence | Synonyms: self-direction, self-reliance, self-sufficiency |
| autoregulation | (noun) (physiology) processes that maintain a generally constant physiological state in a cell or organism | - |
|---|
| autosuggestion | (noun) a system for self-improvement developed by Emile Coue which was popular in the 1920s and 1930s | Synonyms: auto-suggestion, self-suggestion |
|---|
| aversion | (noun) the act of turning yourself (or your gaze) away | Synonyms: averting |
|---|
| (noun) a feeling of intense dislike | Synonyms: antipathy, distaste |
| aviation | (noun) travel via aircraft | Synonyms: air, air travel |
|---|
| (noun) the art of operating aircraft | Synonyms: airmanship |
| (noun) the aggregation of a country's military aircraft | Synonyms: air power |
| (noun) the operation of aircraft to provide transportation | - |
| avionic | (adjective) of or relating to avionics | - |
|---|
| avionics | (noun) science and technology of electronic systems and devices for aeronautics and astronautics | - |
|---|
| avocation | (noun) an auxiliary activity | Synonyms: by-line, hobby, pursuit, sideline, spare-time activity |
|---|
| avocational | (adjective) of or involved in an avocation | - |
|---|
| avulsion | (noun) a forcible tearing or surgical separation of one body part from another | - |
|---|
| (noun) an abrupt change in the course of a stream that forms the boundary between two parcels of land resulting in the loss of part of the land of one landowner and a consequent increase in the land of another | - |
| axon | (noun) long nerve fiber that conducts away from the cell body of the neuron | Synonyms: axone |
|---|
| axonal | (adjective) of or relating to or resembling an axon | - |
|---|
| axone | (noun) long nerve fiber that conducts away from the cell body of the neuron | Synonyms: axon |
|---|
| azonal | (adjective) not divided into zones | - |
|---|
| azonic | (adjective) not restricted to any particular zone or region | - |
|---|
| aztreonam | (noun) an antibiotic (trade name Azactam) used against severe infections; has minimal side effects | Synonyms: Azactam |
|---|
| baboon | (noun) large terrestrial monkeys having doglike muzzles | - |
|---|
| baboonish | (adjective) resembling a baboon | - |
|---|
| backbone | (noun) the part of a network that connects other networks together | - |
|---|
| (noun) the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved | Synonyms: spine |
| (noun) fortitude and determination | Synonyms: grit, gumption, guts, moxie, sand |
| (noun) the series of vertebrae forming the axis of the skeleton and protecting the spinal cord | Synonyms: back, rachis, spinal column, spine, vertebral column |
| (noun) a central cohesive source of support and stability | Synonyms: anchor, keystone, linchpin, lynchpin, mainstay |
| backgammon | (noun) a board game for two players; pieces move according to throws of the dice | - |
|---|
| backwardation | (noun) the market condition wherein the price of a forward or futures contract is trading below the expected spot price at contract maturity. | - |
|---|
| bacon | (noun) back and sides of a hog salted and dried or smoked; usually sliced thin and fried | - |
|---|
| badminton | (noun) a game played on a court with light long-handled rackets used to volley a shuttlecock over a net | - |
|---|
| balconied | (adjective) having balconies or a balcony | - |
|---|
| balcony | (noun) a platform projecting from the wall of a building and surrounded by a balustrade or railing or parapet | - |
|---|
| (noun) an upper floor projecting from the rear over the main floor in an auditorium | - |
| balloon | (noun) large tough nonrigid bag filled with gas or heated air | - |
|---|
| (noun) small thin inflatable rubber bag with narrow neck | - |
| (verb) become inflated | Synonyms: billow, inflate |
| (verb) ride in a hot-air balloon | - |
| balloonfish | (noun) similar to but smaller than porcupinefish | Synonyms: Diodon holocanthus |
|---|
| ballooning | (noun) flying in a balloon | - |
|---|
| balloonist | (noun) someone who flies a balloon | - |
|---|
| baloney | (noun) pretentious or silly talk or writing | Synonyms: bilgewater, boloney, bosh, drool, humbug, taradiddle, tarradiddle, tommyrot, tosh, twaddle |
|---|
| bandoneon | (noun) a type of concertina popular in South America | - |
|---|
| bandwagon | (noun) a large ornate wagon for carrying a musical band | - |
|---|
| (noun) a popular trend that attracts growing support | - |
| barbarisation | (noun) an act that makes people primitive and uncivilized | Synonyms: barbarization |
|---|
| barbarization | (noun) an act that makes people primitive and uncivilized | Synonyms: barbarisation |
|---|
| barbitone | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, diethylbarbituric acid, diethylmalonylurea, veronal |
|---|
| baritone | (adjective) lower in range than tenor and higher than bass | - |
|---|
| (noun) the second lowest brass wind instrument | Synonyms: baritone horn |
| (noun) the second lowest adult male singing voice | Synonyms: baritone voice |
| (noun) a male singer | Synonyms: barytone |
| baron | (noun) a British peer of the lowest rank | - |
|---|
| (noun) a very wealthy or powerful businessman | Synonyms: big businessman, business leader, king, magnate, mogul, power, top executive, tycoon |
| (noun) a nobleman (in various countries) of varying rank | - |
| baronage | (noun) the peers of a kingdom considered as a group | Synonyms: peerage |
|---|
| baronduki | (noun) terrestrial Siberian squirrel | Synonyms: baranduki, barunduki, burunduki, Eutamius asiaticus, Eutamius sibiricus |
|---|
| baroness | (noun) a noblewoman who holds the rank of baron or who is the wife or widow of a baron | - |
|---|
| baronet | (noun) a member of the British order of honor; ranks below a baron but above a knight | Synonyms: Bart |
|---|
| baronetage | (noun) the state of a baronet | - |
|---|
| (noun) the collective body of baronets | - |
| baronetcy | (noun) the title of a baron | - |
|---|
| (noun) the rank or dignity or position of a baronet or baroness | Synonyms: barony |
| baronetise | (verb) confer baronetcy upon | Synonyms: baronetize |
|---|
| baronetize | (verb) confer baronetcy upon | Synonyms: baronetise |
|---|
| barong | (noun) a knife resembling a cleaver; used in the Philippines | - |
|---|
| baronial | (adjective) impressive in size, manner, or appearance | Synonyms: imposing, noble, stately |
|---|
| barony | (noun) the domain of a baron | - |
|---|
| (noun) the estate of a baron | - |
| (noun) the rank or dignity or position of a baronet or baroness | Synonyms: baronetcy |
| bartonia | (noun) annual grown especially for its fragrant golden nocturnal flowers | Synonyms: Mentzelia lindleyi |
|---|