orifice

orifice

[′ȯr·ə·fəs]

(electromagnetism)

Opening or window in a side or end wall of a waveguide or cavity resonator through which energy is transmitted.

(science and technology)

An aperture or hole.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

orifice

A mouth, aperture, opening, perforation, passage, or hole. The size of an orifice normally is fixed.

An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved