Angora rabbit
— Noun
– English
～ domestic breed of rabbit with long white silky hair
auto race
— Noun
– English
～ a race between (usually high-performance) automobiles
arms race
— Noun
– English
～ a competition between nations to have the most powerful armaments
automobile race
— Noun
– English
～ a race between (usually high-performance) automobiles
Aralia racemosa
— Noun
– English
～ unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico
Aristotelia racemosa
— Noun
– English
～ graceful deciduous shrub or small tree having attractive foliage and small red berries that turn black at maturity and are used for making wine
auto racing
— Noun
– English
～ the sport of racing automobiles
anti-racketeering law
— Noun
– English
～ law intended to eradicate organized crime by establishing strong sanctions and forfeiture provisions
arteria radialis
— Noun
– English
～ branch of the brachial artery beginning below the elbow and extending down the forearm around the wrist and into the palm
alpha radiation
— Noun
– English
～ the radiation of alpha particles during radioactive decay
adaptive radiation
— Noun
– English
～ the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches
acoustic radiation pressure
— Noun
– English
～ (acoustics) the pressure exerted on a surface normal to the direction of propagation of a sound wave
actinic radiation
— Noun
– English
～ electromagnetic radiation that can produce photochemical reactions
alkyl radical
— Noun
– English
～ any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons