| archespore | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archesporium |
|---|
| archesporium | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archespore |
|---|
| archetype | (noun) something that serves as a model or a basis for making copies | Synonyms: original, pilot |
|---|
| archiannelid | (noun) small primitive marine worm lacking external segmentation and resembling polychaete larvae | - |
|---|
| archidiaconate | (noun) office or position of an archdeacon | - |
|---|
| archil | (noun) any of various lecanoras that yield the dye archil | Synonyms: orchil |
|---|
| (noun) a purplish dye obtained from orchil lichens | Synonyms: cudbear, orchil |
| archimandrite | (noun) the superior of an abbey of monks | Synonyms: abbot |
|---|
| archine | (noun) a Russian unit of length (71 cm) | - |
|---|
| archipallium | (noun) the olfactory cortex of the cerebrum | Synonyms: paleocortex |
|---|
| archipelago | (noun) a group of many islands in a large body of water | - |
|---|
| architect | (noun) someone who creates plans to be used in making something (such as buildings) | Synonyms: designer |
|---|
| architectonics | (noun) the science of architecture | Synonyms: tectonics |
|---|
| architecture | (noun) the profession of designing buildings and environments with consideration for their esthetic effect | - |
|---|
| (noun) an architectural product or work | - |
| (noun) (computer science) the structure and organization of a computer's hardware or system software | Synonyms: computer architecture |
| (noun) the discipline dealing with the principles of design and construction and ornamentation of fine buildings | - |
| architeuthis | (noun) largest mollusk known about but never seen (to 60 feet long) | Synonyms: giant squid |
|---|
| architrave | (noun) the lowest part of an entablature; rests immediately on the capitals of the columns | - |
|---|
| (noun) the molding around a door or window | - |
| archive | (noun) a depository containing historical records and documents | - |
|---|
| archives | (noun) collection of records especially about an institution | - |
|---|
| archivist | (noun) a person in charge of collecting and cataloguing archives | - |
|---|
| archness | (noun) inappropriate playfulness | Synonyms: impertinence, perkiness, pertness, sauciness |
|---|
| archosaur | (noun) extinct reptiles including: dinosaurs, plesiosaurs, pterosaurs, ichthyosaurs, thecodonts | Synonyms: archosaurian, archosaurian reptile |
|---|
| archosaurian | (noun) extinct reptiles including: dinosaurs, plesiosaurs, pterosaurs, ichthyosaurs, thecodonts | Synonyms: archosaur, archosaurian reptile |
|---|
| archpriest | (noun) a senior clergyman and dignitary | Synonyms: hierarch, high priest, prelate, primate |
|---|
| archway | (noun) a passageway under a curved masonry construction | Synonyms: arch |
|---|
| arethusa | (noun) any of several bog orchids of the genus Arethusa having 1 or 2 showy flowers | - |
|---|
| arishth | (noun) large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia | Synonyms: Azadirachta indica, margosa, Melia Azadirachta, neem, neem tree, nim tree |
|---|
| arithmancy | (noun) divination by means of numbers | - |
|---|
| arithmetic | (noun) the branch of pure mathematics dealing with the theory of numerical calculations | - |
|---|
| arithmetician | (noun) someone who specializes in arithmetic | - |
|---|
| armchair | (noun) chair with a support on each side for arms | - |
|---|
| armhole | (noun) a hole through which you put your arm and where a sleeve can be attached | - |
|---|
| aromatherapy | (noun) the therapeutic use of aromatic plant extracts and essential oils in baths or massage | - |
|---|
| arrhythmia | (noun) an abnormal rate of muscle contractions in the heart | Synonyms: cardiac arrhythmia |
|---|
| arrowhead | (noun) the pointed head or striking tip of an arrow | - |
|---|
| arrowsmith | (noun) a maker of arrows | - |
|---|
| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
|---|
| arteriography | (noun) roentgenographic examination of arteries | - |
|---|
| arthralgia | (noun) pain in a joint or joints | - |
|---|
| arthritic | (noun) a person afflicted with arthritis | - |
|---|
| arthritis | (noun) inflammation of a joint or joints | - |
|---|
| arthrocentesis | (noun) removal of fluid from a joint by centesis | - |
|---|
| arthrodesis | (noun) the surgical fixation of a joint which is intended to result in bone fusion | - |
|---|
| arthrogram | (noun) an X ray of a joint after the injection of a contrast medium | - |
|---|
| arthrography | (noun) roentgenographic examination of a joint after injection of radiopaque contrast medium; produces an arthrogram | - |
|---|
| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
|---|
| arthropathy | (noun) a pathology or abnormality of a joint | - |
|---|
| arthroplasty | (noun) surgical reconstruction or replacement of a malformed or degenerated joint | - |
|---|
| arthropod | (noun) invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin | - |
|---|
| arthroscope | (noun) a type of endoscope that is inserted into a joint for visual examination | - |
|---|
| arthroscopy | (noun) a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision | - |
|---|
| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
|---|
| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| artichoke | (noun) a thistlelike flower head with edible fleshy leaves and heart | Synonyms: globe artichoke |
|---|
| (noun) Mediterranean thistlelike plant widely cultivated for its large edible flower head | Synonyms: artichoke plant, Cynara scolymus, globe artichoke |
| ascolichen | (noun) a lichen in which the fungus component is an ascomycete | - |
|---|
| ash | (noun) any of various deciduous pinnate-leaved ornamental or timber trees of the genus Fraxinus | Synonyms: ash tree |
|---|
| (noun) strong elastic wood of any of various ash trees; used for furniture and tool handles and sporting goods such as baseball bats | - |
| (noun) the residue that remains when something is burned | - |
| ashbin | (noun) a bin that holds rubbish until it is collected | Synonyms: ash-bin, ash bin, ashcan, dustbin, garbage can, trash barrel, trash bin, trash can, wastebin |
|---|
| ashcake | (noun) corn bread wrapped in cabbage leaves and baked in hot ashes (southern) | Synonyms: ash cake, corn tash |
|---|
| ashcan | (noun) a bin that holds rubbish until it is collected | Synonyms: ash-bin, ash bin, ashbin, dustbin, garbage can, trash barrel, trash bin, trash can, wastebin |
|---|
| ashlar | (noun) a rectangular block of hewn stone used for building purposes | - |
|---|
| ashram | (noun) (India) a place of religious retreat for Hindus | - |
|---|
| (noun) a place of religious retreat modeled after the Indian ashram | - |
| ashtray | (noun) a receptacle for the ash from smokers' cigars or cigarettes | - |
|---|
| asphalt | (noun) a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons | Synonyms: mineral pitch |
|---|
| (noun) mixed asphalt and crushed gravel or sand; used especially for paving but also for roofing | - |
| asphodel | (noun) any of various chiefly Mediterranean plants of the genera Asphodeline and Asphodelus having linear leaves and racemes of white or pink or yellow flowers | - |
|---|
| asphyxia | (noun) a condition in which insufficient or no oxygen and carbon dioxide are exchanged on a ventilatory basis; caused by choking or drowning or electric shock or poison gas | - |
|---|
| asphyxiation | (noun) killing by depriving of oxygen | Synonyms: suffocation |
|---|
| (noun) the condition of being deprived of oxygen (as by having breathing stopped) | Synonyms: suffocation |
| asphyxiator | (noun) a manually operated device for extinguishing small fires | Synonyms: extinguisher, fire extinguisher |
|---|
| asshole | (noun) vulgar slang for anus | Synonyms: arse, arsehole, bunghole |
|---|
| (noun) insulting terms of address for people who are stupid or irritating or ridiculous | Synonyms: bastard, cocksucker, dickhead, mother fucker, motherfucker, prick, shit, SOB, son of a bitch, whoreson |
| associateship | (noun) the position of associate (as in an office or academy) | - |
|---|
| asthenia | (noun) an abnormal loss of strength | Synonyms: astheny |
|---|
| asthenopia | (noun) a tiredness of the eyes caused by prolonged close work by a person with an uncorrected vision problem | Synonyms: eyestrain |
|---|
| asthenosphere | (noun) the lower layer of the crust | - |
|---|
| astheny | (noun) an abnormal loss of strength | Synonyms: asthenia |
|---|
| asthma | (noun) respiratory disorder characterized by wheezing; usually of allergic origin | Synonyms: asthma attack, bronchial asthma |
|---|
| asthmatic | (noun) a person suffering from asthma | - |
|---|
| astonishment | (noun) the feeling that accompanies something extremely surprising | Synonyms: amazement |
|---|
| astrakhan | (noun) the fur of young lambs | - |
|---|
| astraphobia | (noun) a morbid fear of thunder and lightning | - |
|---|
| astrophysicist | (noun) an astronomer who studies the physical properties of celestial bodies | - |
|---|
| astrophysics | (noun) the branch of astronomy concerned with the physical and chemical properties of celestial bodies | - |
|---|
| 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 |
|---|
| athanor | (noun) a furnace that feeds itself so as to maintain a uniform temperature; used by alchemists | - |
|---|
| athar | (noun) essential oil or perfume obtained from flowers | Synonyms: atar, attar, ottar |
|---|
| atheism | (noun) a lack of belief in the existence of God or gods | - |
|---|
| atheist | (noun) someone who does not believe in the existence of a god | - |
|---|
| athenaeum | (noun) a place where reading materials are available | Synonyms: atheneum |
|---|
| (noun) a literary or scientific association for the promotion of learning | Synonyms: atheneum |
| atheneum | (noun) a place where reading materials are available | Synonyms: athenaeum |
|---|
| (noun) a literary or scientific association for the promotion of learning | Synonyms: athenaeum |
| atherodyde | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: athodyd, flying drainpipe, ramjet, ramjet engine |
|---|
| atherogenesis | (noun) the formation of atheromas on the walls of the arteries as in atherosclerosis | - |
|---|
| atheroma | (noun) a fatty deposit in the intima (inner lining) of an artery; can obstruct blood flow | - |
|---|
| atherosclerosis | (noun) a stage of arteriosclerosis involving fatty deposits (atheromas) inside the arterial walls, thus narrowing the arteries | Synonyms: coronary artery disease |
|---|
| athetosis | (noun) a continuous succession of slow, writhing, involuntary movements of the hands and feet and other body parts | - |
|---|
| athlete | (noun) a person trained to compete in sports | Synonyms: jock |
|---|
| athleticism | (noun) intense energy | Synonyms: strenuosity |
|---|
| athletics | (noun) an active diversion requiring physical exertion and competition | Synonyms: sport |
|---|
| (noun) participation in sports events as an extracurricular activity | - |
| (noun) a contest between athletes | Synonyms: athletic competition, athletic contest |
| athodyd | (noun) a simple type of jet engine; must be launched at high speed | Synonyms: atherodyde, flying drainpipe, ramjet, ramjet engine |
|---|
| atmoradiograph | (noun) a device which measures the frequency of occurrence of atmospherics. | - |
|---|
| atmosphere | (noun) a distinctive but intangible quality surrounding a person or thing | Synonyms: air, aura |
|---|
| (noun) the mass of air surrounding the Earth | Synonyms: air |
| (noun) the envelope of gases surrounding any celestial body | - |
| (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade | Synonyms: atm, standard atmosphere, standard pressure |
| (noun) the weather or climate at some place | Synonyms: atmospheric state |
| (noun) a particular environment or surrounding influence | Synonyms: ambiance, ambience |
| atmospherics | (noun) a crackling or hissing noise caused by electrical interference | Synonyms: atmospheric static, static |
|---|
| atrophedema | (noun) recurrent large circumscribed areas of subcutaneous edema; onset is sudden and it disappears within 24 hours; seen mainly in young women, often as an allergic reaction to food or drugs | Synonyms: angioedema, giant hives, periodic edema, Quincke's edema |
|---|
| atrophy | (noun) any weakening or degeneration (especially through lack of use) | Synonyms: withering |
|---|
| (noun) a decrease in size of an organ caused by disease or disuse | Synonyms: wasting, wasting away |
| attache | (noun) a shallow and rectangular briefcase | Synonyms: attache case |
|---|
| (noun) a specialist assigned to the staff of a diplomatic mission | - |