a navigational device for projecting altitude curves of the stars and planets onto charts or plotting sheets.


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  • Astroid

    a hypocycloid with four cusps. noun (maths) a hypocycloid having four cusps adj. “star-shaped,” 1897, from Greek astroeides, from astron “star” (see astro-) + -oeides (see -oid).

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    . . . abbreviation astrological astrology astrologer astrological astrology

  • Astrolabe

    an astronomical instrument for taking the altitude of the sun or stars and for the solution of other problems in astronomy and navigation: used by Greek astronomers from about 200 b.c. and by Arab astronomers from the Middle Ages until superseded by the sextant. Historical Examples See Chaucer’s own treatise on The astrolabe, which he […]

  • Astrologer

    the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs. Obsolete. the science of astronomy. Contemporary Examples “The last thing we need is another layer,” says astrologer Miller. Astrologers Predict Holiday Hell Gina Piccalo November 20, 2010 We had the better team and anyhow our astrologer had picked […]

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