"having more than one form," 1886, from pleo- "more" + -morphy "form, shape," from Greek morphē "form," a word of uncertain etymology. Pleomorphous is by 1854. Related: Pleomorphism.
plentiful
plentitude
plenty
plenum
pleo-
pleomorphic
pleonasm
pleonastic
plesiosaurus
plethora
*pleu-
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