a. | 1. | (Biol.) Falling off, or subject to fall or be shed, at a certain season, or a certain stage or interval of growth, as leaves (except of evergreens) in autumn, or as parts of animals, such as hair, teeth, antlers, etc.; also, shedding leaves or parts at certain seasons, stages, or intervals; |
Adj. | 1. | deciduous - (of plants and shrubs) shedding foliage at the end of the growing season Antonyms: evergreen - (of plants and shrubs) bearing foliage throughout the year |
2. | deciduous - (of teeth, antlers, etc.) being shed at the end of a period of growth; "deciduous teeth" |