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placode

[ plak-ohd ]

noun

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


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Word History and Origins

Origin of placode1

1905–10; < Greek plak- (stem of pláx ) something flat, tablet + -ode 1

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placketplacoderm