plural noun

: a large family of small New World viviparous fishes (order Microcyprini) comprising the topminnows and having the male anal fin modified as a copulatory organ compare guppy, swordtail

Word History


New Latin, from Poecilia, type genus (from Greek poikilia condition of being marked with various colors, from poikil- poecil- + -ia -y) + -idae

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Dictionary Entries Near Poeciliidae

Cite this Entry

“Poeciliidae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Poeciliidae. Accessed 30 Nov. 2023.

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