meatus

(redirected from external opening)
Also found in: Thesaurus, Medical, Encyclopedia.

me·a·tus

 (mē-ā′təs)
n. pl. me·a·tus·es or meatus
A body opening or passage, such as the opening of the ear or the urethral canal.

[Latin meātus, passage, from past participle of meāre, to pass; see mei- in Indo-European roots.]

me·a′tal (-təl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

meatus

(mɪˈeɪtəs)
n, pl -tuses or -tus
(Anatomy) 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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

me•a•tus

(miˈeɪ təs)

n., pl. -tus•es, -tus.
an opening, esp. in a bone or bony structure, as the ear or nose.
[1655–65; < Latin meātus course, channel]
me•a′tal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.meatus - a natural body passagewaymeatus - a natural body passageway    
passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"
acoustic meatus, auditory canal, auditory meatus, ear canal, external auditory canal - either of the passages in the outer ear from the auricle to the tympanic membrane
nasal meatus - the passages in the nasal cavity formed by the projections of the nasal conchae
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

me·a·tus

n. meato, pasaje, abertura, apertura.
English-Spanish Medical Dictionary © Farlex 2012

meatus

n (pl meatus) meato
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
While the ear of the former has an external opening, that of the latter is entirely and evenly covered over with a membrane, so as to be quite imperceptible from without.
Like many of the man-made caves of Pellucidar, this one consisted of three chambers, one behind another, and all unlit except for what sunlight filtered in through the external opening. The result was gradually increas-ing darkness as one passed into each succeeding cham-ber.
Physical examination showed that the patient exhibited predominantly female external genitalia, with normal bilateral labia majora, bilateral labia minora and external opening of urethra under the clitoris.
To tell if a crappie is actively spawning, hold it on its back and run your thumb and index finger from just behind the gills to the vent (the external opening near the anus where fish excrete eggs or milt).
Right hypochondrium is the most common site for an external opening; however, fistula opening may be observed in the left hypochondrium, umbilical region, right lumbar region, right iliac fossa and rarely in the gluteal region.
Significant preoperative MRI contribution was also more frequent if the external opening was more than 2 cm away from the anal canal (10.2% vs.
Next Tuesday, Eden-Olive will undergo a surgical procedure to allow her to have food in her stomach for the first time but will have to be fed through an artificial external opening into the stomach until she learns to eat and drink herself.
On June 12, Eden-Olive will undergo a surgical procedure to allow her to have food in her stomach for the first time but will have to be fed through an artificial external opening into the stomach until she learns to eat and drink herself.
The other end of urinary catheter was passed down the urethra and anchored with the prepuial sheath at the external opening to prevent its dislodgement.
(1,2) A complete fistula with both an internal and an external opening is thought to be extremely rare, with only a few reported cases in literature.
Hydrogen peroxide mixed with normal saline was injected into the fistula tract through the external opening using the 8 Fr nasogastric (NG) tube to identify internal opening.
During the diagnostic phase, the fistuloscope is inserted through the external opening, with fluid perfusion which permits direct vision of the fistula tract.