Graphic Overlay Titling: The superimposition of a computer image over a video signal (the computer image typically is keyed to replace a given color or color range in the TV signal).

 

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Graphic Overlay Titling: The superimposition of a computer image over a video signal (the computer image typically is keyed to replace a given color or color range in the TV signal).

Longitude, Geographical Or Terrestrial: The distance in arc a given point on Earth lies east or west of the prime meridian, which passes through Greenwich, England (0° longitude). Geographical longitude is measured from 0° to 180° . . . View Full Definition

Latitude, Geographic: Angular distance measured on Earth north or south of the equator.

Nongeographic Farming: Farming/prospecting a particular segment of the market such as an ethinic group or nationality, as opposed to a geographic area.

Orographic Lifting: Where the flow of air is forced up and over barriers such as highlands or mountains. Moist air being forced aloft begins to cool, consequently condensation forms, and rain or snow begins to . . . View Full Definition

Jpeg (Joint Photographic Experts Group): JPEG (pronounced 'jay peg') is a graphics format newer than GIF which displays photographs and graphic images with millions of colors, it also compresses well and is easy to download. Unfort . . . View Full Definition

International Hydrographic Organization: An institution consisting of representatives of a number of nations organized for the purpose of coordinating the hydrographic work of the participating governments. It had its origin in the . . . View Full Definition

Holographic Will: A will that is written, dated and signed in the testators handwriting, but not witnessed. Some states consider a holographic will to be valid even though it was not witnessed, presumably on . . . View Full Definition

Hydrographic: Referring to the arrangement and movement of bodies of water, such as currents and water masses

Hydrographic Datum: A datum used for referencing depths of water and the heights of predicted tides or water level observations. Same as chart datum. See datum.