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|part of speech:
||of trees and shrubs, having leaves that drop off seasonally each year. (Cf. evergreen.)
Oaks and maples are deciduous trees and are bare throughout the winter.
||dropping off at a particular season or stage of growth, as leaves or antlers.
||not of permanent interest or importance; ephemeral; transitory.
||deciduously (adv.), deciduousness (n.)