1. One versed in astronomy.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• astronimer,
• astronome,
• astronmer,
• astronamers,
• astromomers,
• astonomer,
• astronmers,
• astronamer,
• astrnomer,
• astronemers,
• astronomyn,
• astromomer,
• astronomey,
• astronemer,
• astromer,
• astromoner,
• astrolome,
• astrolomaa,
• astronomet,
• astornomer

• asterope,
• astrolabe,
• astroloma,
• astronomic,
• astringe,
• astrogate,
• astrometry,
• astrologer,
• astronium,
• astrocyte,
• astronomy,
• ash tree,
• astrophyton,
• astrodynamics,
• astronaut,
• astronomical,
• astrodome,
• astropogon.

The adjective form of the word "astronomer" is "astronomical".

The plural of the "astronomer" can be the "astronomers".

The singular of the "astronomer" can be the "astronomer".