- pecilonymy
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n. [Gr. poikilo, varied; onyma, name]1. The use of two or more terms to indicate the same thing.2. A synonym, i.e., a systematic name, as of a species or genus, being designated and later regarded as an incorrect form, rejected and replaced with another more correctly applied.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.