| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. (Astron.), the yearly change in the right ascension or declination of a star, produced by the combined effects of the precession of the equinoxes and the proper motion of the star.[Websters]. | |
| Top | ||
| Expressions | Definition | ||
| Annual variation | (Astron.), the yearly change in the right ascension or declination of a star, produced by the combined effects of the precession of the equinoxes and the proper motion of the star. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||