Arthur Robert Ashe
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～ United States tennis player who was the first Black to win United States and English singles championships (1943-1993)
Anna Mary Robertson Moses
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～ United States painter of colorful and primitive rural scenes (1860-1961)
American robin
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～ large American thrush having a rust-red breast and abdomen
Agathis robusta
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～ Australian timber tree resembling the kauri but having wood much lighter in weight and softer
Australopithecus robustus
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～ large-toothed hominid of southern Africa; from 1.5 to 2 million years ago; formerly Paranthropus
American rock brake
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～ rock-inhabiting fern of northern North America growing in massive tufts and having fronds resembling parsley
art rock
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～ a style of rock music that emerged in the 1970s; associated with attempts to combine rock with jazz and other forms; intended for listening and not dancing
argillaceous rock
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～ a sedimentary rock formed from clay deposits
arenaceous rock
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～ a sedimentary rock composed of sand
acid rock
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～ a musical style that emerged in the 1960s; rock music inspired by or related to drug-induced experience
Aaron's rod
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～ tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches
Auguste Rodin
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～ French sculptor noted for his renderings of the human form (1840-1917)
agentive role
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～ the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clause
affected role
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～ the semantic role of an entity that is not the agent but is directly involved in or affected by the happening denoted by the verb in the clause
Angelo Guiseppe Roncalli
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～ Italian pope from 1958 to 1963 who convoked the Second Vatican Council (1881-1963)
adjoining room
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～ a hotel room that shares a wall with another hotel room
Anna Eleanor Roosevelt
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～ wife of Franklin Roosevelt and a strong advocate of human rights (1884-1962)
ague root
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～ colicroot having a scurfy or granuliferous perianth and white flowers; southeastern United States
anterior root
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～ one of the two roots of a spinal nerve that passes ventrally from the spinal cord and that consists of motor fibers
adventitious root
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～ root growing in an unusual location e.g. from a stem