Periastron

Acceptable For Game Play - UK word list

This word is acceptable for play in the UK dictionary that is being used in the following games:

Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. That point of the orbit of a celestial body which is closest to the star around which the body is orbiting.
    • the GNU version of the Collaborative International Dictionary of English
  • n. That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.
    • The Century Dictionary and Cyclopedia
  • n. In the orbit of any heavenly body which moves around another, the point where the former approaches nearest to the primary: usually applied to double stars, but also generally to any satellite.
    • Word Usage
    "In the middle of the short but furious northern summer, which includes periastron, total insolation is more than double what Earth gets; in the depth of the long northern winter, it is barely less than Terrestrial average."
    Antonym
    perihelion   
     
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