12-letter words containing a, e, r, o, c
- amperometric — relating to or involving the measurement of an electric current
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- anaerobiotic — anaerobic
- anchorperson — the primary reporter on a news television broadcast
- anchovy pear — a Jamaican tree, Grias cauliflora, bearing edible fruits that taste like the mango: family Lecythidaceae
- androcentric — having or regarding man or the male sex as central or primary
- androgenetic — related to androgenesis
- anemochorous — (of a fruit, seed, or spore) adapted for dispersion by wind.
- anglo-french — of or relating to England and France
- anorexigenic — causing loss of appetite
- anorthoclase — a variety of microcline, rich in sodium and sometimes having a play of color: sometimes considered a variety of orthoclase.
- ansate cross — ankh
- anticonsumer — opposed to consumerism
- antielectron — an elementary particle with a positive charge, a positron
- antientropic — showing a tendency towards order
- antiperiodic — efficacious against recurring attacks of a disease
- aortic valve — a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.
- aperiodicity — not periodic; irregular.
- apothecaries — Plural form of apothecary.
- appeal court — An appeal court is the same as a Court of Appeal.
- apperception — the attainment of full awareness of a sensation or idea
- appleknocker — Northern U.S. a rustic.
- appreciation — Appreciation of something is the recognition and enjoyment of its good qualities.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- appreciatory — appreciative.
- approachable — If you describe someone as approachable, you think that they are friendly and easy to talk to.
- approachment — (archaic) approach.
- arachnophobe — a person who is afraid of spiders
- arborescence — treelike in size and form.
- arborio rice — variety of round-grain rice used for making risotto
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- archaeologic — Pertaining to archaeology.
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- archdeaconry — the office, rank, or duties of an archdeacon
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- archegoniate — having archegonia
- archenterons — Plural form of archenteron.
- archeologist — archaeology.
- archeopteryx — A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
- archesporial — the primitive cell, or group of cells, that give rise to the cells from which spores are derived.
- archesporium — archespore.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archipelagos — Plural form of archipelago.
- archiphoneme — an abstract linguistic unit representing two or more phonemes when the distinction between these has been neutralized: conventionally shown by a capital letter within slashes, as /T/ for /t/ and /d/ in German Rat and Rad
- arctic ocean — the ocean surrounding the North Pole, north of the Arctic Circle. Area: about 14 100 000 sq km (5 440 000 sq miles)
- argillaceous — (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc
- armed forces — The armed forces or the armed services of a country are its military forces, usually the army, navy, marines, and air force.
- armoured car — a fast lightly armed and armoured vehicle, mainly used for reconnaissance
- army officer — a person in the army who holds a position of authority, responsibility and duty, especially one who holds a commission