- 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 meatal
Under good illumination, the largest possible speculum is inserted into the meatal orifice.
- 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
- Relating to a meatus.
- 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.