- (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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for gonidium
The motile force is imparted to the gonidium by dense rows of waving cilia with which it is completely surrounded.
At free end of each sterigma is formed an oval body—a spore or "gonidium" (d), which, when ripe, is thrown off from the sterigma.The Elements of Bacteriological Technique
John William Henry Eyre
- a green algal cell in the thallus of a lichen
- an asexual reproductive cell in some colonial algae
C19: from New Latin, diminutive from gono-
- 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.
- A chlorophyll-bearing, photosynthetic algal cell housed in the thallus of a lichen.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.