shedding the leaves annually, as certain trees and shrubs.
2.
falling off or shed at a particular season, stage of growth, etc., as leaves, horns, or teeth.
3.
not permanent; transitory.
Origin: 1650–60; < L dēciduus tending to fall, falling, equiv. to dēcid(ere) to fall off, down (dē-de-+ -cidere, comb. form of cadere to fall) + -uus deverbal adj. suffix; see -ous
Falling off or shed at a specific season or stage of growth: deciduous antlers; deciduous leaves; deciduous teeth.
Shedding or losing foliage at the end of the growing season: deciduous trees.
Not lasting; ephemeral.
[From Latin dēciduus, from dēcidere, to fall off : dē-, de- + cadere, to fall; see kad- in Indo-European roots.] de·cid'u·ous·ly adv., de·cid'u·ous·ness n.
1688, from L. deciduus "that which falls off," from decidere "to fall off," from de- "down" + cadere "to fall" (see case (1)). Originally with reference to leaves, petals, teeth, etc.; specific sense of "trees whose leaves fall off" (opposed to evergreen) is from 1778.
Main Entry: de·cid·u·ous Pronunciation: di-'sij-&-w&s Function: adjective 1: falling off or shed at a certain stage inthe life cycle 2: having deciduous parts deciduous dentition>
Shedding leaves at the end of a growing season and regrowing them at the beginning of the next growing season. Most deciduous plants bear flowers and have woody stems and broad rather than needlelike leaves. Maples, oaks, elms, and aspens are deciduous. Compare evergreen. See more at abscission.
Falling off or shed at a particular season or stage of growth, as antlers.