angular diameter
nounAstronomy.
the angle that the apparent diameter of a celestial object subtends at the eye of the observer.
Origin of angular diameter
1First recorded in 1870–75
Words Nearby angular diameter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use angular diameter in a sentence
It appeared about fifteen degrees in angular diameter, showing that we had travelled some thirty thousand miles from it.
To Mars via The Moon | Mark WicksIts angular diameter at mean distance is 31′ 5″, or, say, just over ½°.
The Story of the Solar System | George F. ChambersThe constant, 220, is the reciprocal of the quotient of the angular diameter of the moon divided by 2.
A Quantitative Study of the Nocturnal Migration of Birds. | George H. Lowery.
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