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pleion

noun plei·on \ ˈplīˌän \
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Definition of pleion

plural -s
: a region in meteorology of positive departure from the normal of an element (as pressure, temperature, rainfall)
—

pleionian

\(ˈ)plī¦ōnēən\ adjective

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Origin and Etymology of pleion

New Latin, from Greek pleiōn more, greater

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