[ plee-uh-deez, plahy- ]
/ ˈpli əˌdiz, ˈplaɪ- /
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plural noun
Classical Mythology. seven daughters of Atlas and half sisters of the Hyades, placed among the stars to save them from the pursuit of Orion. One of them (the Lost Pleiad ) hides, either from grief or shame.
Astronomy. a conspicuous group or cluster of stars in the constellation Taurus, commonly spoken of as seven, though only six are visible.
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Origin of Pleiades

1350–1400; Middle English Pliades<Latin Plīades<Greek Pleíades (singular Pleías); akin to pleîn to sail
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Pleiades in a sentence

British Dictionary definitions for Pleiades (1 of 2)

/ (ˈplaɪəˌdiːz) /

pl n
Greek myth the seven daughters of Atlas, placed as stars in the sky either to save them from the pursuit of Orion or, in another account, after they had killed themselves for grief over the death of their half-sisters the Hyades

British Dictionary definitions for Pleiades (2 of 2)

/ (ˈplaɪəˌdiːz) /

pl n
a young conspicuous open star cluster approximately 370 light years away in the constellation Taurus, containing several thousand stars only six or seven of which are visible to the naked eyeCompare Hyades 1
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

Scientific definitions for Pleiades

[ plēə-dēz′ ]

A loose collection of several hundred stars in the constellation Taurus, at least six of which are visible to the unaided eye.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.