WordReference Random House Unabridged Dictionary of American English © 2026
side′real hour′ an′gle, [Astron.]
- Astronomythe angle, measured westward through 360°, between the hour circle passing through the vernal equinox and the hour circle of a celestial body. Cf. hour angle.
'sidereal hour angle' also found in these entries (note: many are not synonyms or translations):