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Hyades

[hahy-uh-deez]
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noun (used with a plural verb)
  1. Astronomy. a group of stars comprising a moving cluster in the constellation Taurus, supposed by the ancients to indicate the approach of rain when they rose with the sun.
  2. Classical Mythology. a group of nymphs and sisters of the Pleiades who nurtured the infant Dionysus and were placed among the stars as a reward.
Also Hy·ads [hahy-adz] /ˈhaɪ ædz/.

Origin of Hyades

1350–1400; Middle English Hiades < Latin < Greek, equivalent to hý(ein) to rain + -ades, plural of -as -ad1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for hyades

Hyades1

Hyads (ˈhaɪædz)

pl n
  1. an open cluster of stars in the constellation TaurusCompare Pleiades 1

Word Origin

C16: via Latin from Greek huades, perhaps from huein to rain

Hyades2

pl n
  1. Greek myth seven nymphs, daughters of Atlas, whom Zeus placed among the stars after death
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hyades

Hyades

star cluster in constellation Taurus, late 14c., from Greek Hyades, popularly explained as "rain-bringers" (from hyein "to rain"), because wet weather supposedly began coincidentally with their heliacal rising, but in fact probably from hys "swine" (the popular Latin word for them was Suculae "little pigs"). Grimm ("Teutonic Mythology") lists the Anglo-Saxon glosses of Hyades as Raedgastran, Raedgasnan, Redgaesrum.

Online Etymology Dictionary, © 2010 Douglas Harper