Meaning

adjective (of plants and shrubs) shedding foliage at the end of the growing season

adjective (of teeth, antlers, etc.) being shed at the end of a period of growth

originEtymology tree Proto-Indo-European *de Proto-Indo-European *-h₁ Proto-Indo-European *déh₁ Proto-Italic *dē Latin dē Latin dē- Proto-Indo-European *ḱad- Proto-Indo-European *-eti Proto-Indo-European *ḱádeti Proto-Italic *kadō Latin cadō Latin dēcidō Proto-Indo-European *-wós Proto-Italic *-wos Latin -uus Latin dēciduuslbor. English deciduous Learned borrowing from Latin dēciduus (“falling down or…

Etymology from Wiktionary, CC BY-SA 3.0