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hydraulic pump[hi′drȯ·lik ′pəmp]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A component unit in the hydraulic system of a construction machine; the prime mover that forces fluid to flow through the system.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
A pump in a hydraulic-pressure system, used to build up the requisite pressure for the system. The main hydraulic pumps are normally engine-driven, whereas those for use in a secondary hydraulic system or in an emergency may be mechanically or electrically driven. The hydraulic pump in such an eventuality may also be hand operated. See hydraulic system.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved