orifice


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Related to orifice: Orifice plate, Back 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 ?
(b) Clinical picture of gutta-percha point at the estimated position of the orifice of the mesiobuccal canal.
Five patients suffered from mild tingling or burning sensation upon dressing at the urethral orifice, and most cases felt similarly after being illuminated for five minutes, suggesting that they tolerated the combined therapy well.
This report provides orifice plate and meter tube/fitting specifications, tolerance and installation requirements that are needed to meet AGA-3/API 14.3 Part 1 metering uncertainties.
Although CT scan revealed bilateral duplicated kidneys and a dilated ureter extending below the bladder on the right, it failed to show the exact insertion of the upper pole ureteral orifice. The possible reason might be low contrast resolution for deep pelvic structures and imaging in the axial plane which could not accurately depict the craniocaudally oriented insertion.
Average rate in pools have presented almost identical figures (for non-submerged orifice).
Searching for the extra orifice is aided by utilization of enhanced vision systems in endodontics.
Cystoscopy showed an ectopic right ureteral orifice just below the bladder neck (Fig 1).
The morphological appearances of LAA, the shapes of LAA orifice rims, the relation between the levels of LAA orifice and LSPV were presented as the percentage.
Figure 4 shows the scanning electron microscope (SEM) images of the undercut etched orifice structure at the T-junction right after peeling the photoresist etching mask and after sealing.
The first configuration was a two orifice die (Fig.
The CS800 Series direct-operated, spring-loaded regulators are available in numerous body sizes and end connections, outlet pressure settings, orifice sizes, and the option for internal or external pressure registration.