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process by which an organism exchanges gases with its environment. The term now refers to the overall process by which oxygen is abstracted from air and is transported to the cells for the oxidation of organic molecules while carbon dioxide (CO2
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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.
Permeability of plastic sheeting to air, bubbles, voids, or trapped gas globules.
Inhaling and exhaling.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.