- any small New World fish of the family Poeciliidae, of fresh or brackish tropical and temperate waters, including the mosquitofish, guppies, and mollies.
- belonging or pertaining to the family Poeciliidae.
Origin of poeciliid
< New Latin Poeciliidae, equivalent to Poecili(a) name of genus (< Greek poikilía striped, marked with various colors) + -idae -id2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018