Glossary · Nouns · A
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TermTypeDefinitionClassificationsUpdated
Archaebacteriumnounconsidered ancient life forms that evolved separately from bacteria and blue-green algaeverified
Archaeobacterianounconsidered ancient life forms that evolved separately from bacteria and blue-green algaeverified
Archaeologynounthe branch of anthropology that studies prehistoric people and their culturesverified
Archaeopteryxnounextinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bonesverified
Archaeornisnounextinct primitive toothed bird with a long feathered tail and three free clawed digits on each wingverified
Archdeaconnoun(Anglican Church) an ecclesiastical dignitary usually ranking just below a bishopverified
Archduchessnouna wife or widow of an archduke or a princess of the former ruling house of Austriaverified
Archeobacterianounconsidered ancient life forms that evolved separately from bacteria and blue-green algaeverified
Archeopteryxnounextinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bonesverified
Archerfishnounany of several small freshwater fishes that catch insects by squirting water at them and knocking them into the waterverified
Archiannelidnounsmall primitive marine worm lacking external segmentation and resembling polychaete larvaeverified
Architectural EngineeringnounMWEthe branch of engineering that deals with the construction of buildings (as distinguished from architecture as a design art)verified
Architectural OrnamentnounMWE(architecture) something added to a building to improve its appearanceverified
ArchitecturenounDescription of the fundamental underlying design of the components of the business system, or of one element of the business system (e.g., technology), the relationships among them, and the manner in which they support enterprise objectivesFramework
Arctic MossnounMWEan erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humansverified
Arctic PoppynounMWEsubarctic perennial poppy of both hemispheres having fragrant white or yellow to orange or peach flowersverified
Arctiid MothnounMWEstout-bodied broad-winged moth with conspicuously striped or spotted wingsverified
Arcuate Vein of the KidneynounMWEveins that receive blood from interlobular veins of kidney and rectal venulesverified
Arcus SenilisnounMWEa whitish deposit in the shape of an arc that is sometimes seen in the corneaverified
Arcus ZygomaticusnounMWEthe slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal boneverified
Area 17 of BrodmannnounMWEthe part of the occipital cortex that receives the fibers of the optic radiation from the lateral geniculate body and is the primary receptive area for visionverified
Area CodenounMWEa number usually of 3 digits assigned to a telephone area as in the United States and Canadaverified
Area of Cardiac DullnessnounMWEa triangular area of the front of the chest (determined by percussion)verified
Arecanounany of several tall tropical palms native to southeastern Asia having egg-shaped nutsverified
Arenanounthe central area of an ancient Roman amphitheater where contests and spectacles were heldverified
Areolanounsmall circular area such as that around the human nipple or an inflamed area around a pimple or insect biteverified
Arerenounlarge west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seedsverified