The thyroid pouch or thyroid diverticulum is the embryological structure from which thyroid follicular cells derive. It grows from the floor of the pharynx. ...
Thyroglossal diverticulum, the endodermal bud from the floor of the embryonic pharynx; the primordium of the parenchyma of the thyroid gland. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. the endodermal bud from the floor of the embryonic pharynx; the primordium of the parenchyma of the thyroid gland.