What is "pinopod"

n. 1 Any of various marine bivalves belonging to the suborder ''Pinopodia''. 2 progesterone sensitive nodules in the human uterus thought to be responsible for removal of uterine fluids in early pregnancy.

Pinopods (also known as pinopodes and uterodomes) are apical epithelial cellular protrusions of the endometrium of the uterus.

Pinopods have a pinocytotic role (hence the name pinopod - Greek for "drinking foot"), as well as a secretory role, however their usefulness as a marker for endometrial receptivity is still debated in the current literature.