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单词 deciduous
释义

WordReference Random House Learner's Dictionary of American English © 2024
de•cid•u•ous /dɪˈsɪdʒuəs/USA pronunciation   adj. 
  1. Botanylosing the leaves every year:deciduous trees.
  2. Botanyshed at a particular season or stage of growth:deciduous teeth.
See -cide-2.
WordReference Random House Unabridged Dictionary of American English © 2024
de•cid•u•ous  (di sijo̅o̅ əs),USA pronunciation adj. 
  1. Botanyshedding the leaves annually, as certain trees and shrubs.
  2. Botanyfalling off or shed at a particular season, stage of growth, etc., as leaves, horns, or teeth.
  3. not permanent;
    transitory.
  • Latin dēciduus tending to fall, falling, equivalent. to dēcid(ere) to fall off, down (dē- de- + -cidere, combining form of cadere to fall) + -uus deverbal adjective, adjectival suffix; see -ous
  • 1650–60
de•cidu•ous•ly, adv. 
de•cidu•ous•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
deciduous /dɪˈsɪdjʊəs/ adj
  1. (of trees and shrubs) shedding all leaves annually at the end of the growing season and then having a dormant period without leaves
    Compare evergreen
  2. (of antlers, wings, teeth, etc) being shed at the end of a period of growth
Etymology: 17th Century: from Latin dēciduus falling off, from dēcidere to fall down, from cadere to fall

deˈciduousness n
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更新时间:2025/7/23 8:30:20