- shedding the leaves annually, as certain trees and shrubs.
- falling off or shed at a particular season, stage of growth, etc., as leaves, horns, or teeth.
- not permanent; transitory.
Origin of deciduous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin for deciduous
C17: from Latin dēciduus falling off, from dēcidere to fall down, from cadere to fall
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
- Falling off or shed at a specific stage of growth, as teeth of the first dentition.
- Of, relating to, or being the first or primary dentition.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.