autumnal point

from The Collaborative International Dictionary of English v.0.48
Autumnal \Au*tum"nal\, a. [L. auctumnalis, autumnalis: cf. F.
   automnal.]
   1. Of, belonging to, or peculiar to, autumn; as, an autumnal
      tint; produced or gathered in autumn; as, autumnal fruits;
      flowering in autumn; as, an autumnal plant.
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            Thick as autumnal leaves that strow the brooks
            In Vallombrosa.                       --Milton.
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   2. Past the middle of life; in the third stage.
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            An autumnal matron.                   --Hawthorne.
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   {Autumnal equinox}, the time when the sun crosses the
      equator, as it proceeds southward, or when it passes the
      autumnal point.

   {Autumnal point}, the point of the equator intersected by the
      ecliptic, as the sun proceeds southward; the first point
      of Libra.

   {Autumnal signs}, the signs Libra, Scorpio, and Sagittarius,
      through which the sun passes between the autumnal equinox
      and winter solstice.
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