cotylo-, cotyl- +

(Greek: cup, any cup-shaped hollow; a seed leaf)

polycotyledon
A plant whose seed contains many or more than two cotyledons; such as, as certain gymnosperms.
polycotyledonary
Having the villi of the placenta collected into definite patches, or cotyledons.

In anatomy, one of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface.

In botany, fine hairs on plants, resembling the pile of velvet.

syncotyledonous
Having united cotyledonous.