Arc of lowitz
a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.
Read Also:
- Arc sec
. arc secant
- Arc secant
the angle, measured in radians, that has a secant equal to a given number. symbol: sec −1. abbreviation: arc sec; arc secant the inverse of the secant function.
- Arc second
astronomy, 2 (def 4).
- Arc sin
. arc sine
- Arc sine
the angle, measured in radians, that has a sine equal to a given number. symbol: sin −1. abbreviation: arc sin; arc sine the inverse of the sine function.