| acronym | (noun) a word formed from the initial letters of the several words in the name and pronounced as one word | Synonyms: initialism |
|---|
| adiaphoron | (noun) (Stoic philosophy) a matter having no moral merit or demerit. | - |
|---|
| (noun) a religious ceremonial or ritual observance that is held to be an affair of the individual conscience because it is neither forbidden nor enjoined by the scriptures. | - |
| adrenosterone | (noun) a steroid having androgenic activity; obtained from the cortex of the adrenal gland | - |
|---|
| aeronaut | (noun) someone who operates an aircraft | Synonyms: aviator, flier, flyer |
|---|
| aeronautics | (noun) the theory and practice of navigation through air or space | Synonyms: astronautics |
|---|
| affront | (noun) a deliberately offensive act or something producing the effect of deliberate disrespect | Synonyms: insult |
|---|
| agronomist | (noun) an expert in soil management and field-crop production | - |
|---|
| agronomy | (noun) the application of soil and plant sciences to land management and crop production | Synonyms: scientific agriculture |
|---|
| aileron | (noun) an airfoil that controls lateral motion | - |
|---|
| aldosterone | (noun) a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance | - |
|---|
| aldosteronism | (noun) a condition caused by overproduction of aldosterone | Synonyms: hyperaldosteronism |
|---|
| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
|---|
| aleurone | (noun) granular protein in outermost layer of endosperm of many seeds or cereal grains | - |
|---|
| amiodarone | (noun) an antiarrhythmic drug (trade name Cordarone) that has potentially fatal side effects and is used to control serious heart rhythm problems only when safer agents have been ineffective | Synonyms: Cordarone |
|---|
| anachronism | (noun) an artifact that belongs to another time | - |
|---|
| (noun) a person who seems to be displaced in time; who belongs to another age | - |
| (noun) something located at a time when it could not have existed or occurred | Synonyms: misdating, mistiming |
| andiron | (noun) metal supports for logs in a fireplace | Synonyms: dog-iron, dog, firedog |
|---|
| androsterone | (noun) an androgenic hormone that is less active than testosterone | - |
|---|
| animatronics | (noun) the construction of robots to look like animals (developed for Disneyland) | - |
|---|
| antielectron | (noun) an elementary particle with positive charge; interaction of a positron and an electron results in annihilation | Synonyms: positron |
|---|
| antineutron | (noun) the antiparticle of a neutron | - |
|---|
| apron | (noun) a garment of cloth or leather or plastic that is tied about the waist and worn to protect your clothing | - |
|---|
| (noun) a paved surface where aircraft stand while not being used | - |
| (noun) the part of a modern theater stage between the curtain and the orchestra (i.e., in front of the curtain) | Synonyms: forestage, proscenium |
| (noun) (golf) the part of the fairway leading onto the green | - |
| archenteron | (noun) central cavity of the gastrula; becomes the intestinal or digestive cavity | - |
|---|
| astronaut | (noun) a person trained to travel in a spacecraft | Synonyms: cosmonaut, spaceman |
|---|
| 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 |
|---|
| 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 |
|---|
| asynchrony | (noun) the relation that exists when things occur at unrelated times | Synonyms: asynchronism, desynchronisation, desynchronization, desynchronizing |
|---|
| 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 |
| barong | (noun) a knife resembling a cleaver; used in the Philippines | - |
|---|
| 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 |
| battlefront | (noun) the line along which opposing armies face each other | Synonyms: front, front line |
|---|
| beachfront | (noun) a strip of land running along a beach | - |
|---|
| betatron | (noun) accelerates a continuous beam of electrons to high speeds by means of the electric field produced by changing magnetic flux | Synonyms: induction accelerator |
|---|
| bevatron | (noun) a cyclotron that accelerates protons up to several billion electron volts | - |
|---|
| binturong | (noun) arboreal civet of Asia having a long prehensile tail and shaggy black hair | Synonyms: Arctictis bintourong, bearcat |
|---|
| boron | (noun) a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder | Synonyms: atomic number 5, B |
|---|
| brachistochrone | (noun) a curve between two points along which a body can move under gravity in a shorter time than for any other curve. | - |
|---|
| bronc | (noun) an unbroken or imperfectly broken mustang | Synonyms: broncho, bronco |
|---|
| bronchiole | (noun) any of the smallest bronchial ducts; ending in alveoli | - |
|---|
| bronchiolitis | (noun) inflammation of the membranes lining the bronchioles | - |
|---|
| bronchitis | (noun) inflammation of the membranes lining the bronchial tubes | - |
|---|
| broncho | (noun) an unbroken or imperfectly broken mustang | Synonyms: bronc, bronco |
|---|
| bronchodilator | (noun) a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs | - |
|---|
| bronchopneumonia | (noun) pneumonia characterized by acute inflammation of the walls of the bronchioles | Synonyms: bronchial pneumonia |
|---|
| bronchoscope | (noun) a slender tubular instrument used to examine the bronchial tubes | - |
|---|
| bronchospasm | (noun) a spasm of the bronchi that makes exhalation difficult and noisy; associated with asthma and bronchitis | - |
|---|
| bronchus | (noun) either of the two main branches of the trachea | Synonyms: bronchial tube |
|---|
| bronco | (noun) an unbroken or imperfectly broken mustang | Synonyms: bronc, broncho |
|---|
| broncobuster | (noun) a person who breaks horses | Synonyms: bronco buster, buster |
|---|
| brontosaur | (noun) huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic | Synonyms: apatosaur, apatosaurus, Apatosaurus excelsus, brontosaurus, thunder lizard |
|---|
| brontosaurus | (noun) huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic | Synonyms: apatosaur, apatosaurus, Apatosaurus excelsus, brontosaur, thunder lizard |
|---|
| brony | (noun) an adult, male fan of the show My Little Pony: Friendship is Magic | - |
|---|
| bronze | (noun) a sculpture made of bronze | - |
|---|
| (noun) an alloy of copper and tin and sometimes other elements; also any copper-base alloy containing other elements in place of tin | - |
| bronzer | (noun) A cosmetic powder that comes in various shades of brown, meant to create an impression of tanned skin. | Synonyms: bronzing powder |
|---|
| buspirone | (noun) a drug (trade name BuSpar) designed specifically for anxiety | Synonyms: BuSpar |
|---|
| caldron | (noun) a very large pot that is used for boiling | Synonyms: cauldron |
|---|
| cauldron | (noun) a very large pot that is used for boiling | Synonyms: caldron |
|---|
| chaldron | (noun) a British imperial capacity measure (liquid or dry) equal to 36 bushels | - |
|---|
| chamfron | (noun) medieval plate armor to protect a horse's head | Synonyms: chanfron, front-stall, frontstall, testiere |
|---|
| chanfron | (noun) medieval plate armor to protect a horse's head | Synonyms: chamfron, front-stall, frontstall, testiere |
|---|
| chaperon | (noun) one who accompanies and supervises a young woman or gatherings of young people | Synonyms: chaperone |
|---|
| chaperone | (noun) one who accompanies and supervises a young woman or gatherings of young people | Synonyms: chaperon |
|---|
| chevron | (noun) an inverted V-shaped charge | - |
|---|
| (noun) V-shaped sleeve badge indicating military rank and service | Synonyms: grade insignia, stripe, stripes |
| chronicle | (noun) a record or narrative description of past events | Synonyms: account, history, story |
|---|
| chronicler | (noun) someone who writes chronicles | - |
|---|
| chronograph | (noun) an accurate timer for recording time | - |
|---|
| chronology | (noun) the determination of the actual temporal sequence of past events | - |
|---|
| (noun) a record of events in the order of their occurrence | - |
| (noun) an arrangement of events in time | - |
| chronometer | (noun) an accurate clock (especially used in navigation) | - |
|---|
| chronoscope | (noun) an instrument for accurate measurements of small intervals of time | - |
|---|
| chylomicron | (noun) a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood | - |
|---|
| cicerone | (noun) a guide who conducts and informs sightseers | - |
|---|
| cimarron | (noun) wild sheep of mountainous regions of western North America having massive curled horns | Synonyms: bighorn, bighorn sheep, Ovis canadensis, Rocky Mountain bighorn, Rocky Mountain sheep |
|---|
| cistron | (noun) (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity | Synonyms: factor, gene |
|---|
| citron | (noun) large lemonlike fruit with thick aromatic rind; usually preserved | - |
|---|
| (noun) thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind | Synonyms: citron tree, Citrus medica |
| citronwood | (noun) wood of a citron tree | - |
|---|
| (noun) durable fragrant wood; used in building (as in the roof of the cathedral at Cordova, Spain) | Synonyms: sandarac |
| coelenteron | (noun) the saclike body cavity of a coelenterate | - |
|---|
| confrontation | (noun) the act of hostile groups opposing each other | Synonyms: opposition |
|---|
| (noun) a focussed comparison; bringing together for a careful comparison | - |
| (noun) a hostile disagreement face-to-face | Synonyms: encounter, face-off, showdown |
| (noun) a bold challenge | - |
| (noun) discord resulting from a clash of ideas or opinions | - |
| corona | (noun) a long cigar with blunt ends | - |
|---|
| (noun) (anatomy) any structure that resembles a crown in shape | - |
| (noun) the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse | Synonyms: aureole |
| (noun) an electrical discharge accompanied by ionization of surrounding atmosphere | Synonyms: corona discharge, corposant, electric glow, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, St. Elmo's fire |
| (noun) one or more circles of light seen around a luminous object | - |
| (noun) (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower | - |
| (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, coronavirus, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
| coronach | (noun) a song or hymn of mourning composed or performed as a memorial to a dead person | Synonyms: dirge, lament, requiem, threnody |
|---|
| coronal | (noun) flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes | Synonyms: chaplet, garland, lei, wreath |
|---|
| coronary | (noun) obstruction of blood flow in a coronary artery by a blood clot (thrombus) | Synonyms: coronary thrombosis |
|---|
| coronation | (noun) the ceremony of installing a new monarch | Synonyms: enthronement, enthronisation, enthronization, investiture |
|---|
| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
|---|
| coroner | (noun) a public official who investigates by inquest any death not due to natural causes | Synonyms: medical examiner |
|---|
| coronet | (noun) margin between the skin of the pastern and the horn of the hoof | - |
|---|
| (noun) a small crown; usually indicates a high rank but below that of sovereign | - |
| coronilla | (noun) any of various plants of the genus Coronilla having purple or pink or yellow flowers in long axillary heads or umbels | - |
|---|
| coronion | (noun) the craniometric point at the tip of the coronoid process of the mandible | - |
|---|
| corticosterone | (noun) secreted by the adrenal cortex; involved in regulating water and electrolyte balance in the body | - |
|---|
| cosmotron | (noun) a large proton synchrotron; uses frequency modulation of an electric field to accelerate protons | - |
|---|
| coumarone | (noun) a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins | Synonyms: benzofuran, cumarone |
|---|
| crone | (noun) an ugly evil-looking old woman | Synonyms: beldam, beldame, hag, witch |
|---|
| crony | (noun) a close friend who accompanies his buddies in their activities | Synonyms: brother, buddy, chum, pal, sidekick |
|---|