Osculum vs. Oscular

Osculumnoun

A small opening or orifice.

Oscularadjective

Of or pertaining to the mouth.

Osculumnoun

One of the suckers on the head of a tapeworm.

Osculumnoun

(zoology) The main opening in a sponge from which water is expelled.

Osculumnoun

Same as Oscule.

Osculum

The osculum (plural ) is an excretory structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel. Wastes diffuse into the water and the water is pumped through the osculum carrying away with it the sponge's wastes.

‘oscula’;