Meaning of RAD in English

RAD

~ 1

■ abbreviation ~ian(s).

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~ 2

■ noun informal a political ~ical.

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~ 3

■ noun Physics a unit of absorbed dose of ionizing ~iation, corresponding to the absorption of 0.01 joule per kilogram of absorbing material.

Origin

early 20th cent.: acronym from ~iation absorbed dose .

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~ 4

■ adjective informal, chiefly N. Amer. excellent.

Origin

1980s: prob. an abbrev. of ~ical .

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~ 5

■ noun a ~iator.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.