Definition of aditus in English:

aditus

Pronunciation /ˈadɪtəs/

noun

Anatomy Zoology
  • The opening of or entrance into a cavity or channel (frequently with distinguishing scientific Latin word or phrase denoting the cavity or channel); especially (more fully "aditus ad antrum") the opening between the tympanic cavity and the mastoid antrum.

Origin

Mid 19th century; earliest use found in Robley Dunglison (1798–1869), physician and medical writer. From classical Latin aditus, literally ‘approach’.