The act or an instance of becoming open or being made to open:
A crack, crevice, or split.
A moment; an instant:
The definition of a hole is a hollow place, opening or break in something.
The opening, or the diameter of the opening, in a camera, telescope, etc. through which light passes into the lens
A narrow passage of water, as between two islands.
A tiny opening, usually microscopic, as in plant leaves or skin, through which fluids may be absorbed or discharged
A long, narrow opening or crack
A narrow opening; a groove or slit:
(Zoology) The excretory opening of the digestive tract in animals such as birds, reptiles, amphibians, and fish.
A passage for escape or exit; a vent.
(Anatomy) The foramen of Monro.
Find another word for orifice. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for orifice, like: mouth, opening, cleft, crack, hole, aperture, inlet, pore, slit, slot and vent.