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either aperture of the nose; see nares.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


, pl.


(nā'ris, -res), [TA]
Anterior opening to the nasal cavity.
Farlex Partner Medical Dictionary © Farlex 2012


Either of the external openings of the nose; a naris.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Anterior opening to either side of the nasal cavity.
Synonym(s): naris, prenaris.
[L. naris]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


One of the paired openings into the (SC)nose(D) that contains hairs which can trap gross particulate matter in the inhaled air.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005




an external opening of the nose leading into the nasal cavity.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Both nostrils were examined and the right nostril was found to be roomier with good blast of air.
His terribly pinched nostrils that made breathing so difficult and noisy had been surgically corrected.
Mi Binky, founded by the inventor Graham Smith, whose own daughter passed away at the tender age of just 7 days, is launching a pacifier also known as a dummy or binky which has been proven to clear the nostrils of infants.
Doctors wrote: "The patient was discharged with advice to avoid obstructing both nostrils while sneezing."
We used two simple methods to assess the patency of nostrils. Firstly, the occlusion test, which was administered by asking for the patient's own assessment of nasal airflow during occlusion of the contralateral nostril while in a sitting posture.
Grab the nostrils with a tissue and squeeze hard for two minutes by the clock.
He had accidently inhaled zinc oxide which later turned into a solid substance and blocked his nostrils.
Wider noses and nostrils were more common in warm, humid conditions while narrower noses led the way in places that were cold and dry.
Then, he was told to inhale deeply through both nostrils and with the mouth closed exhale through both the nostrils producing a continuous humming sound until the exhalation has exhausted.
Have the client block one of their nostrils and hold the ruler next the opened nostril.
Have the individual block among their nostrils and hold the leader next the opened up nostril.