ALT

/ælt/
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Definition
  1. Noun:
    • Angular distance above the horizon: In astronomy and navigation, "alt" (short for "altitude") refers to the vertical angle between a celestial object (like a star or planet) and the observer's horizon, measured in degrees.
Usage Examples
  • Noun:
    • The telescope's computer calculated the star's alt and azimuth.
    • For accurate navigation, the sailor measured the sun's alt at noon.
Advanced Usage
  • "Alt" as an abbreviation: Commonly used in technical fields like astronomy, aviation, and cartography as shorthand for "altitude."
    • The pilot checked the aircraft's alt on the instrument panel.
  • In computing: While a distinct meaning, it is important to note that "Alt" is also a standard abbreviation for the "Alternate" key on a computer keyboard, used in keyboard shortcuts.
Variants and Related Words
  • Altitude (n): The full form of "alt," meaning height above a given level, especially sea level or ground level.
    • The airplane reached a cruising altitude of 35,000 feet.
  • Elevation (n): A synonym often used interchangeably with "altitude" in geography and mapping.
    • The elevation of the mountain peak is 2,000 meters.
Synonyms
  • Height: The measurement from base to top.
  • Elevation: Height above a given level, especially sea level.
Related Phrases
  • Alt-Az mount: Short for Altitude-Azimuth mount, a common two-axis mount for telescopes.
    • The amateur astronomer set up his telescope on an alt-az mount.
Noun
  1. angular distance above the horizon (especially of a celestial object)

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