Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

irrotational

adjective ir·ro·ta·tion·al \ ˌir-(r)ō-ˈtā-shnəl , -shə-nᵊl \

Definition of irrotational

1 : not rotating or involving rotation
2 : free of vortices
  • irrotational flow

First Known Use of irrotational

1875

in the meaning defined at sense 1

See Words from the same year
NEW! Time Traveler

Seen and Heard

What made you want to look up irrotational? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

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

Love words? Need even more definitions?

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

Words at Play

Ask the Editors

Word Games