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[goh-nid-ee-uh m] /goʊˈnɪd i əm/
noun, plural gonidia
[goh-nid-ee-uh] /goʊˈnɪd i ə/ (Show IPA)
(in algae) any one-celled asexual reproductive body, as a tetraspore or zoospore.
an algal cell, or a filament of an alga, growing within the thallus of a lichen.
Origin of gonidium
1835-45; < New Latin, equivalent to gon- gon- + -idium noun suffix
Related forms
gonidial, gonidic, adjective
gonidioid, adjective
intergonidial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for gonidium


noun (pl) -ia (-ɪə)
a green algal cell in the thallus of a lichen
an asexual reproductive cell in some colonial algae
Derived Forms
gonidial, gonidic, adjective
Word Origin
C19: from New Latin, diminutive from gono-
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
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gonidium in Science
Plural gonidia
  1. An asexual reproductive cell found in certain algae that form colonies. Gonidia undergo repeated mitoses to form new colonies, which then hatch out of the parent colonies.

  2. A chlorophyll-bearing, photosynthetic algal cell housed in the thallus of a lichen.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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