- an opening or foramen, especially in a bone or bony structure, as the opening of the ear or nose.
Origin of meatus
1655–65; < Latin meātus course, channel, equivalent to meā(re) to go, extend, have a course + -tus suffix of v. action
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for meatus
This is least objectionable in cases of stricture close to the meatus.A Manual of the Operations of Surgery
Here is a cochlea; a meatus; and, as it should seem, more than one tympanum.An Introduction to Entomology: Vol. II (of 4)
This is repeated with fresh pledgets until the meatus is cleansed.
Klliker states however that the blind end of the meatus becomes actually pushed in towards the tympanic cavity.
The tympanic membrane is derived from the tissue which separates the meatus auditorius externus from the tympanic cavity.
- anatomy a natural opening or channel, such as the canal leading from the outer ear to the eardrum
C17: from Latin: passage, from meāre to pass
- A body opening or passage, especially the external opening of a canal.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.