Definition of ostiolum in English:

ostiolum

noun

Mycology Botany
  • An ostiole, especially of a fungus.

Origin

Early 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. From classical Latin ōstiolum little door from ōstium + -olum.

Pronunciation

ostiolum

/ˌɒstɪˈəʊləm/