[ plak-ohd ]
/ ˈplæk oʊd /

noun Embryology.

a local thickening of the endoderm in the embryo, that usually constitutes the primordium of a specific structure or organ.

Origin of placode

1905–10; <Greek plak- (stem of pláx) something flat, tablet + -ode1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for placode

[ plăkōd′ ]


An area of thickening in the embryonic epithelial layer from which some organ or structure later develops.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.