orifice

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Related to Orifices: Body orifice

orifice

 [or´ĭ-fis]
1. the entrance or outlet of any body cavity.
2. any opening or meatus. adj., adj orific´ial.
aortic orifice the opening of the left ventricle into the aorta; called also aortic opening.
external urethral orifice urinary meatus.
internal urethral orifice the opening from the urinary bladder into the urethra at one corner of the trigone of the bladder.
left atrioventricular orifice (mitral orifice) the opening between the left atrium and ventricle of the heart.
pulmonary orifice (orifice of pulmonary trunk) the opening between the pulmonary trunk and the right ventricle of the heart; called also opening of pulmonary trunk.
right atrioventricular orifice (tricuspid orifice) the opening between the right atrium and ventricle of the heart.
ureteral orifice the opening of a ureter into the urinary bladder at one corner of the trigone of the bladder. Called also ureteral meatus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

or·i·fice

(or'i-fis), [TA] Avoid the mispronunciation or'ĭ-fĭ-sēz of the plural of this word.
Any aperture or opening.
See also: aperture, opening, os, ostium, meatus.
Synonym(s): orificium [TA]
[L. orificium]
Farlex Partner Medical Dictionary © Farlex 2012

orifice

(ôr′ə-fĭs, ŏr′-)
n.
An opening, especially to a cavity or passage of the body; a mouth or vent.

or′i·fi′cial (-fĭsh′əl) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
Synonym(s): orificium.
[L. orificium]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

orifice

any opening or aperture.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

or·i·fice

(ōr'i-fis) [TA]
Any aperture or opening.
[L. orificium]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Despite these contributions, the details of the flow and flame passage through the orifice, which seems crucial for determining overall ignition and the ignition mechanism, have not been examined extensively yet.
The result is a deformed nozzle seat with a smaller, bell-mouthed orifice. In order to avoid an undercut condition, you now have to use a smaller machine-nozzle tip orifice, which is not what was originally used to establish the best process.
Rounding of lid margins, vascularity of lid margins, lashes abnormity, hyperkeratinization, hyperemia of lid margins, plugging of orifices, scarred obliteration of orifices, upper tear meniscus height, conjunctival congestion, and corneal fluorescein staining were found to be correlated with age (P < 0.001).
In the cases reported in our study, conventional periapical radiographs and the dental operating microscope could not provide sufficient information on the location of calcified canal orifices. Therefore, the intraoperative use of CBCT was necessary and proved to be vital in successfully locating the calcified canal orifices.
In our patient, the cystoscopy showed normal bilateral ureteral orifices, but the ectopic ureteral orifice could not be identified.
After sectioning all teeth 3 additional MB-2 canal orifices were located in the remaining 20 teeth these 3 canals were located neither with the traditional methods nor with the DOM evaluation thus total 33 of 50 MB-2 canals were actually present in maxillary first molar (Table 3).
Cystoscopy showed an ectopic right ureteral orifice just below the bladder neck (Fig 1).
(17) reported that the most prominent ridge in the LA is the left atrial ridge between the orifices of the left pulmonary veins and the orifice of LAA.
The values of the shear rate obtained for each orifice of the two orifices die are greater than that obtained for each orifice of the breaker plate, whereas the values obtained for the residence time in each orifice of the both configurations are similar.
It offers a space-saving approach, without manifold orifices to machine or press.
A limitation of this work is that experimental validation of these models couldn't be achieved since the proposed orifices couldn't be manufactured.
It is most convenient to assume the number of orifices and radius of swirl chamber.