A pore or air-filled pocket in a surface or material; (Botany) a stoma in a leaf; a similar structure in the thallus or receptacle of certain liverworts.
Origin
Early 19th century.
Definition of air pore in US English:
air pore
noun
A pore or air-filled pocket in a surface or material; (Botany) a stoma in a leaf; a similar structure in the thallus or receptacle of certain liverworts.