variant of .
a variant of plio-
also pleo-, word-forming element meaning “more,” from comb. form of Greek pleion “larger, greater in quantity, the more part, very many” (comp. of polys “much”), from PIE *ple- (cf. Latin plere “to fill,” plebes, “the populace, the common people;” Greek plethein “be full,” pleres “full”), possibly a variant of *pele- (1) “to fill” (see poly-).
/ˈplaɪəʊˌsiːn/ adjective, noun 1. a variant spelling of Pliocene
[plahy-uh-tak-see] /ˈplaɪ əˌtæk si/ noun, Botany. 1. an increase in the normal number of parts.
[plahy-o-truh-pee] /plaɪˈɒ trə pi/ noun, Genetics. 1. the phenomenon of one gene being responsible for or affecting more than one phenotypic characteristic. n. 1921, from German pleiotrop (1910), from Greek pleion “greater in quantity, the more part, very many,” (see pleio-) + trope “turn, turning” (see trope). Related: Pleiotropic; pleiotropism.
- Pleiotropic gene
pleiotropic gene n. A gene that causes a number of distinct but seemingly unrelated phenotypic effects. Also called polyphenic gene.