Definition of nisus
: a mental or physical effort to attain an end : a perfective urge or endeavor
Origin and Etymology of nisus
Latin, from niti to lean, rely, strive; akin to Latin nictare to wink — more at connive
First Known Use: 1699
Seen and Heard
What made you want to look up nisus? Please tell us where you read or heard it (including the quote, if possible).