breathing

breathing

[′brēth·iŋ]

(engineering)

Opening and closing of a plastics mold in orderto let gases escape during molding. Also known as degassing.

Movement of gas, vapors, or air in and out of a storage-tank vent line as a result of liquid expansions and contractions induced by temperature changes.

(materials)

Permeability of plastic sheeting to air, bubbles, voids, or trapped gas globules.

(physiology)

Inhaling and exhaling.

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