Poeciliidae

plural noun
Poe·​ci·​li·​idae | \ ˌpēsəˈlīəˌdē \

Definition of Poeciliidae

: 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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for Poeciliidae

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

Keep scrolling for more

Learn More about Poeciliidae

Statistics for Poeciliidae

Cite this Entry

“Poeciliidae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Poeciliidae. Accessed 12 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Dog Breeds

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!