cotyledon

Definition

Each of the patches of villi on the foetal chorion in the placenta of ruminants and some other mammals.

Etymology

From Latin cotylēdōn, from Ancient Greek κοτυληδών (kotulēdṓn, “cup-shaped cavity”), from κοτύλη (kotúlē, “cup”).

Example Sentences

• "Forced to apply animal findings to humans, his human womb also had cotyledons like a dog's."