• Webster's Revised Unabridged Dictionary
    • n Synastry Concurrence of starry position or influence; hence, similarity of condition, fortune, etc., as prefigured by astrological calculation.
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Century Dictionary and Cyclopedia
  • Interesting fact: In astrology, synastry is the comparison of natal charts to forecast how people will interact.
    • n synastry Coincidence as regards stellar influence; the state of having similar starry influences presiding over one's fortune, as determined by astrological calculation.
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Chambers's Twentieth Century Dictionary
    • n Synastry si-nas′tri coincidence as regards stellar influences.
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Webster's Revised Unabridged Dictionary
Pref. syn-, + Gr. a star
Chambers's Twentieth Century Dictionary
Gr. syn, together with, astron, a star.