impetus
/ˈɪm.pə.təs/ noun
Forms impetuses
- noun Anything that impels; a stimulating factor. “The outbreak of World War II in 1939 gave a new impetus to receiver development.”
- noun A force, either internal or external, that impels; an impulse.
- noun The force or energy associated with a moving body; a stimulus.
- noun (history, medieval physics) A principle of motive force, held as equivalent to weight times velocity by John Buridan, in an auxiliary theory of Aristotelian dynamics introduced by John Philoponus, describing projectile motion against gravity as linear until it transitions to a vertical drop and the intellectual precursor to the concepts of inertia, momentum and acceleration in classical mechanics.
- noun An activity in response to a stimulus.
Synonyms
Etymology
Borrowed from Latin impetus (“a rushing upon, an attack, assault, onset”), from impetō (“to rush upon, attack”), from in- (“upon”) + petō (“to seek, fall upon”).
Webster’s 1913
- noun A property possessed by a moving body in virtue of its weight and its motion; the force with which any body is driven or impelled; momentum.
- noun Fig.: Impulse; incentive; vigor; force. Buckle.
Etymology [L., fr. impetere to rush upon, attack; pref. im- in + petere to fall upon, seek. See Petition.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “impetus”, CC BY-SA 4.0. Details