overhead

Pronunciation:		owvur'hed
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Matching Terms:		overhead charges, overhead cover, overhead projector, overhead railway, overhear, overheat, overheated, overheating, overheavy
WordNet Dictionary

	Definition:	[n] a hard return hitting the tennis ball above your head [n] (nautical) the top surface of an enclosed space on a ship [n] a transparency for use with an overhead projector [n] (computer science) the disk space required for non-data information (used for location and timing) [n] the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes [n] (computer science) the processing time required by a device prior to the execution of a command [adv] above the head; over the head; "bring the legs together overhead" [adv] above your head; in the sky; "planes were flying overhead" [adj] located or originating from above; "an overhead crossing"

	Synonyms:	budget items, command overhead, command processing overhead, command processing overhead time, disk overhead, elevated, operating cost, operating expense, smash, viewgraph

	Antonyms:	subsurface, surface

	See Also:	access time, cabin, ceiling, disbursal, disbursement, disc space, disk space, expense, foil, operating budget, processing time, return, transparency

Webster's 1913 Dictionary

	Definition:	\O`ver*head"\, adv. Aloft; above; in or attached to the ceiling or roof; in the story or upon the floor above; in the zenith. While overhead the moon Sits arbitress. --Milton. Note: Also used adjectively; as, an overhead crane, gear, etc. {Overhead engine}, a vertical steam engine in which the cylinder stands above the crank. {Overhead work}, a general term in manufactories for countershafting and gearing, when overhead.

Computing Dictionary

	Definition:	1. Resources (in computing usually processing time or storage space) consumed for purposes which are incidental to, but necessary to, the main one. Overheads are usually quantifiable "costs" of some kind. Examples: The overheads in running a business include the cost of heating the building. Keeping a program running all the time eliminates the overhead of loading and initialising it for each transaction. Turning a subroutine into inline code eliminates the call and return time overhead for each execution but introduces space overheads. 2. information, such as control, routing, and error checking characters, that is transmitted along with the user data. It also includes information such as network status or operational instructions, network routing information, and retransmissions of user data received in error. 3. Overhead transparencies or "slides" (usually 8-1/2" x 11") that are projected to an audience via an overhead (flatbed) projector.

	See Also:	communications

Thesaurus Terms

	Related Terms:	above, abovestairs, airward, aloft, aloof, budget, budget items, burden of expenditure, carrying charge, ceiling, charges, cost, cost of living, cost-of-living allowance, cost-of-living index, costs, direct costs, disbursals, distributed costs, eaves, elevated, expenditures, expense, expense account, expenses, general expenses, high, high up, housetop, in the air, in the clouds, indirect costs, labor costs, lantern, liabilities, maintenance, material costs, on high, on stilts, on the peak, on tiptoe, operating costs, operating expense, outlay, over, overhead, penthouse, plafond, prime cost, raised, replacement cost, ridgepole, roof, roof garden, roofage, roof-deck, roofing, roofpole, rooftop, rooftree, shingles, skylight, skyward, slates, straight up, swindle sheet, tiles, tiptoe, to the zenith, top, unit cost, up, upper, upstairs, upward, upwards

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