pounds per square inch absolute
Also found in: Acronyms.
pounds per square inch absolute[′pau̇ns pər ¦skwer ′inch ′ab·sə‚lüt]
The absolute, thermodynamic pressure, measured by the number of pounds-force exerted on an area of 1 square inch. Abbreviated lbf in.-2 abs; psia.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.