pneumostome

pneu·mo·stome

(no͞o′mə-stōm′, nyo͞o′-)

A small opening in the mantle of a pulmonate gastropod through which air passes.

[From New Latin pneumostoma : pneumo- + Greek stoma, mouth.]

References in periodicals archive ?

Pneumostome situated halfway between front and rear ends of mantle.

This caused the snails to open up their pneumostome (breathing tube) to get oxygen from the air.

When the snail opened its pneumostome at the surface, it was given a gentle poke with a wooden stick, causing it to close again.

Tactile stimulation of the lips, tentacles, mantle edge, and pneumostome effectively produces geotactic responses.