ichthyology

noun

ich·​thy·​ol·​o·​gy ˌik-thē-ˈä-lə-jē How to pronounce ichthyology (audio)
: a branch of zoology that deals with fishes
ichthyological adjective
ichthyologically adverb
ichthyologist noun

Word History

First Known Use

1646, in the meaning defined above

Time Traveler
The first known use of ichthyology was in 1646

Browse Nearby Words

Cite this Entry

“Ichthyology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ichthyology. Accessed 24 Mar. 2025.

Kids Definition

ichthyology

noun
ich·​thy·​ol·​o·​gy ˌik-thē-ˈäl-ə-jē How to pronounce ichthyology (audio)
: a branch of zoology that deals with fishes

More from Merriam-Webster on ichthyology

Love words? Need even more definitions?

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