1. ostiole - a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass. pore - any small opening in the skin or outer surface of an animal. Based on WordNet 3.0, Farlex clipart collection.

What is ostiole in biology?

A pore in the fruiting body of certain fungi and algae, through which either spores or gametes are released. An ostiole occurs, for example, in the perithecium of ascomycete fungi (see ascocarp) and in the conceptacle of brown algae. From: ostiole in A Dictionary of Biology »

What is Osteole?

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