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单词 cumulonimbus
释义

WordReference Random House Learner's Dictionary of American English © 2024
cu•mu•lo•nim•bus /ˌkyumyəloʊˈnɪmbəs/USA pronunciation   n. [countable], pl. -bi /-baɪ/USA pronunciation  -bus•es. 
  1. Meteorologya cloud indicating thunderstorm conditions, having the shape of a tall anvil.

WordReference Random House Unabridged Dictionary of American English © 2024
cu•mu•lo•nim•bus  (kyo̅o̅′myə lō nimbəs),USA pronunciation n., pl. -bus. 
  1. Meteorologya cloud of a class indicative of thunderstorm conditions, characterized by large, dense towers that often reach altitudes of 30,000 ft. (9000 m) or more, cumuliform except for their tops, which appear fibrous because of the presence of ice crystals: occurs as a single cloud or as a group with merged bases and separate tops. Also called thundercloud, thunderclouds, thunderhead. 
  • cumulo- + nimbus 1885–90

Collins Concise English Dictionary © HarperCollins Publishers::
cumulonimbus /ˌkjuːmjʊləʊˈnɪmbəs/ n ( pl -bi / -baɪ/, -buses)
  1. a cumulus cloud of great vertical extent, the top often forming an anvil shape and the bottom being dark coloured, indicating rain or hail: associated with thunderstorms
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更新时间:2025/7/23 2:09:46