1) The height above sea level.
Altitude, from L. altitudo, from altus "high".
Farâzâ, from farâz "above, up, upon," → height, + noun making suffix -a.
Fr.: cercle d'égale altitude
A circle on the celestial sphere that has equal altitude over the Earth's surface and lies parallel to the horizon. Also called almucantar, circle of altitude, parallel of altitude.
Fr.: monture altitude-azimutale
Same as → altazimuth mounting.
circle of altitude
parallel of altitude
A small circle on the celestial sphere whose plane is parallel to the celestial horizon. Same as → almucantar.