Skip to Content
Medical Term:


Pronunciation: plak'od

Definition: Local thickening in the embryonic ectodermal layer; the cells of the placode ordinarily constitute a primordial group from which a sense organ or ganglion develops.

[G. plakodes, fr. plax, anything flat or broad, + eidos, like]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.