Definition of Orifice

1. Noun. An aperture or hole that opens into a bodily cavity. "The orifice into the aorta from the lower left chamber of the heart"

Definition of Orifice

1. n. A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound.

Definition of Orifice

1. Noun. A mouth or aperture, as of a tube, pipe, etc.; an opening; as, ¹

¹ Source:

Definition of Orifice

1. a mouth or mouthlike opening [n -S]

Medical Definition of Orifice

1. An opening. The mouth for example is an orifice. (12 Dec 1998)

Orifice Pictures

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Lexicographical Neighbors of Orifice

orienting reflex
orienting response
orifice (current term)
orifice of external acoustic meatus
orifice of inferior vena cava
orifice of internal acoustic meatus
orifice of superior vena cava
orificium internum uteri
orificium ureteris

Literary usage of Orifice

Below you will find example usage of this term as found in modern and/or classical literature:

1. Proceedings by Natural Gas Association of America, Modern Language Association of America (1917)
"TH KERR, ENGINEER, THE OHIO FUEL SUPPLY CO., COLUMBUS, O. An orifice Meter consists of a plate with a circular hole or orifice in the center, so placed in a ..."

2. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1910)
"That is. for such an orifice about t'i ' e of the heul is expended in overcoming ... 15. clear from the inner edge of the orifice as at a or Ь (fig. ..."

3. The Lancet (1898)
"The question of the existence or position of the Internal orifice of the fistula into the bowel has next to be considered and in the cases in which ..."

4. The Cambridge Natural History by Sidney Frederick Harmer, Arthur Everett Shipley (1896)
"255, B, C) Primary orifice with a sinus, but no tooth . . .43 A prominent tooth projects into the orifice from its lower side. Peristome interrupted or with ..."

5. Report of the Annual Meeting (1877)
"It is thus to be noticed at the outset that the division of the orifice into bands, infinitely narrow in height, but extending horizontally across the ..."

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