Skip to search.
Reference
Dictionary
Encyclopedia
Thesaurus
World Factbook

 
Search Dictionary:

Houghton Mifflin

im·pe·tus  audio  (mp-ts) KEY 

NOUN:
pl. im·pe·tus·es
  1. An impelling force; an impulse.
  2. The force or energy associated with a moving body.
    1. Something that incites; a stimulus.
    2. Increased activity in response to a stimulus: The approaching deadline gave impetus to the investigation.

ETYMOLOGY:
Middle English impetous, from Latin impetus, from impetere, to attack : in-, against ; see in-2 + petere, to go towards, seek; see pet- in Indo-European roots


Visit our partner's site
Provided by Houghton Mifflin
logoeReference -- Download this interactive reference software to your desktop computer