Definition of orifice in US English:

orifice

noun

  • An opening, as of a pipe or tube, or one in the body, such as a nostril or the anus.

    • ‘It had large, opaque eyes, no nose, and a lipless slit for a mouth with two small orifices on each side.’
    • ‘This helps the surgeon identify the ureteral orifices during bladder dissection and urethral bladder reanastomosis.’
    • ‘On the left there was an obstructing lesion noted at the orifice of the left upper lobe bronchus.’
    • ‘The ureteral orifices are located at the proximal borders of the trigone area.’
    • ‘The exophytic mass bulged from the roof of the left atrium between the atrial septum and the orifices of the pulmonary veins.’
    • ‘The anal canal ends at the anus, which is the external orifice, or opening, of the digestive tract.’
    • ‘Anatomists have applied the term cardia to that part of the stomach that lies around the orifice of the tubular esophagus.’
    • ‘The ureters, their resection margins, and internal orifices were free from tumor.’
    • ‘The level of the orifices of the coronary arteries in the sinuses of Valaslva varies in both the vertical and horizontal directions.’
    • ‘Epithelia are tissues lining the outer surface of the body, or the inner surface of organs which have a direct connection to one of the body's orifices.’
    • ‘Teeth are exempted from the requirement, as are incisions in or around natural body orifices.’
    • ‘The major orifice opposite the aulacophore is the anus, with the mouth somewhere near the ambulacrum.’
    • ‘Other landmarks used to guide resection are the right and left ureteral orifices and the bladder neck.’
    • ‘In addition, no diverticular orifices were identified.’
    • ‘Hair is found on all parts of the skin except the palm and sole, and the oral, anal, and urogenital orifices.’
    • ‘Jordan's hands clasped over the inhaler and pressed the orifice of it and faced it to her mouth.’
    • ‘We even applied sunscreen to the nostrils, an orifice often overlooked by the uninitiated.’
    • ‘Laparoscopy enables hernial orifices to be observed and tension-free mesh repair to be carried out effectively.’
    • ‘Under the reconstruction favoured here, the right orifice is the mouth and the left the anus, implying a U-shaped gut.’
    • ‘During excretion, the urethral orifice below the bladder is opened and the urine passes through the urethra.’
    opening, hole, aperture, crack, slot, slit, cleft, cranny, chink, gap, space, vent, breach, break, rent, fissure, mouth, crevice, rift, perforation, pore
    View synonyms

Origin

Late Middle English: from French, from late Latin orificium, from os, or- ‘mouth’ + facere ‘make’.

Pronunciation

orifice

/ˈɔrəfəs//ˈôrəfəs/