an expert in astronomy; a scientific observer of the celestial bodies.

Nearby words

  1. astronaut,
  2. astronautical,
  3. astronautical engineering,
  4. astronautics,
  5. astronavigation,
  6. astronomer royal,
  7. astronomical,
  8. astronomical clock,
  9. astronomical distance,
  10. astronomical frame of reference

Origin of astronomer

Middle English word dating back to 1325–75; see origin at astronomy, -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for astronomer

British Dictionary definitions for astronomer



a scientist who studies astronomy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for astronomer



late 14c., from astronomy (q.v.), replacing French import astronomyen (c.1300), which, had it survived, probably would have yielded *astronomian. Still in Shakespeare used in places where we would write astrologer.

Online Etymology Dictionary, © 2010 Douglas Harper