noun, plural me·a·tus·es, me·a·tus. Anatomy.
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
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Examples from the Web for meatal
Historical Examples of meatal
Under good illumination, the largest possible speculum is inserted into the meatal orifice.
noun plural -tuses or -tus
anatomy a natural opening or channel, such as the canal leading from the outer ear to the eardrum
Word Origin for meatus
C17: from Latin: passage, from meāre to pass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Relating to a meatus.
n. pl. me•a•tus•es
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.