placode

placode

[plak-ohd]
noun Embryology.
a local thickening of the endoderm in the embryo, that usually constitutes the primordium of a specific structure or organ.

Origin:
1905–10; < Greek plak- (stem of pláx) something flat, tablet + -ode1

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American Heritage
Medical Dictionary

placode plac·ode (plāk'ōd')
n.
An area of thickening in the embryonic epithelial layer from which some organ or structure later develops.

The American Heritage® Stedman's Medical Dictionary
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