ostiole

[ os-tee-ohl ]

/ ˈɒs tiˌoʊl /

Biology. a small opening or pore, especially in the fruiting body of a fungus.

Origin of ostiole

1825–35; < Latin ōstiolum little door, equivalent to ōsti(um) door (see ostium) + -olum -ole¹

os·ti·o·lar

[os-tee-uh-ler, o-stahy-] /ˈɒs ti ə lər, ɒˈstaɪ-/, adjective

Ostiole: in Heteroptera, the openings at the sides of meso- and meta- thorax, through which an odoriferous fluid is excreted.

Explanation of Terms Used in Entomology |John. B. Smith

ostiole

/ (ˈɒstɪˌəʊl) /

the pore in the reproductive bodies of certain algae and fungi through which spores pass

any small pore

ostiolar (ˈɒstɪələ) or ostiolate, adjective

C19: from Latin ostiolum, diminutive of ostium door