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n. pl. Le·o·nids or Le·on·i·des (lē-ŏn′ĭ-dēz′)
One of the meteors in the showers of meteors that appear to originate in the vicinity of the constellation Leo and recurring annually in mid-November.
[From Latin Leō, Leōn-, Leo; see Leo.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
n, pl Leonids or Leonides (lɪˈɒnɪˌdiːz)
(Astronomy) any member of a meteor shower that is usually insignificant, but more spectacular every 33 years, and occurs annually in mid-November, appearing to radiate from a point in the constellation Leo
[C19: from New Latin Leōnidēs, from leō lion]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Le•o•nid(ˈli ə nɪd)
n., pl. Le•o•nids, Le•on•i•des (liˈɒn ɪˌdiz)
any of a shower of meteors occurring around November 15 and appearing to radiate from a point in the constellation Leo.
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