Search Result for "astrometry": 
Wordnet 3.0

NOUN (1)

1. the branch of astronomy that deals with the measurement of the position and motion of celestial bodies; 



The Collaborative International Dictionary of English v.0.48:

Astrometry \As*trom"e*try\, n. [Astro- + metry.]
   The art of making measurements among the stars, or of
   determining their relative magnitudes.
   [1913 Webster]


WordNet (r) 3.0 (2006):

astrometry
    n 1: the branch of astronomy that deals with the measurement of
         the position and motion of celestial bodies