English Lexicon

Astrometric

/ˌæstrəˈmɛtrɪk/
adjectiveCEFR C2 (Proficient)Top #15420 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Relating to the precise measurement of the positions, motions, and parallaxes of stars and other celestial bodies.

    "The space telescope provided astrometric data of unprecedented precision for millions of stars."
  2. 2

    Using techniques of astrometry to detect planetary companions through the subtle wobbling motion of a host star.

    "Astrometric detection methods helped confirm the existence of several distant exoplanets."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Greek words 'astron' (star) and 'metron' (measure), combined with the English adjectival suffix '-ic'. The term emerged in the 19th century as precise astronomical measurements and positional astronomy (astrometry) became foundational to mapping stellar positions and movements.

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