astrometry

/ษ™หˆstษนษ’mษ™tษนi/

IPA: /AH0 S T R AA1 M AH0 T R IY0/

noun
  1. 1

    The branch of astronomy that deals with the measurement of the positions and motions of celestial bodies, particularly stars.

Source: https://en.wiktionary.org/wiki/astrometry