Definition of "placode" in Englisch

noun

1. (biology, anatomy, comparative anatomy) A platelike thickening of the epithelial layer of an embryo from which an organ, especially a sense organ, develops.

   • 1978, Charles Russell Bardeen, Irving Hardesty, John Lewis Bremer, Edward Allen Boyden (editors), The Anatomical Record, Volume 191, A. R. Liss, page 450, The neural crest cell bodies become more distant from the placode, but their cell processes permeate the increasingly fibrillar extracellular matrix subjacent to the placode.