Hyades

UK: /ˈhaɪəˌdiːz/ US: (hī′ə dēz′)

WordReference Random House Unabridged Dictionary of American English © 2025

Hy•a•des  (hī′ə dēz′), n. (used with a pl. v.)

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. Mythology [Class. Myth.] 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  (hī′adz). 

• Greek, equivalent. to hý(ein) to rain + -ades, plural of -as -ad
• Latin
• Middle English Hiades 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::

Hyades / ˈhaɪəˌdiːz/, Hyads / ˈhaɪædz/ noun:plural

1. an open cluster of stars in the constellation Taurus
   Compare Pleiades1

Etymology: 16th Century: via Latin from Greek huades, perhaps from huein to rain

Hyades / ˈhaɪəˌdiːz/ noun:plural

1. seven nymphs, daughters of Atlas, whom Zeus placed among the stars after death