the outer boundary of an artifact or a material layer constituting or resembling such a boundary | a hard return hitting the tennis ball above your head |
a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight | (nautical) the top surface of an enclosed space on a ship |
a superficial aspect as opposed to the real nature of something | a transparency for use with an overhead projector |
information that has become public | (computer science) the disk space required for information that is not data but is used for location and timing |
the extended two-dimensional outer boundary of a three-dimensional object | 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 |
the outermost level of the land or sea | (computer science) the processing time required by a device prior to the execution of a command |