Leonid

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Le·o·nid

L0122500 (lē′ə-nĭd)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.]

Leonid

(ˈliːənɪd) 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]

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. [1875–80; < New Latin Leonidēs= Latin Leōn-, s. of Leō Leo1 + -idēs -id1]