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noun, plural -tus·es.
1.
a moving force; impulse; stimulus: The grant for building the opera house gave impetus to the city's cultural life.
2.
(broadly) the momentum of a moving body, especially with reference to the cause of motion.
Origin:
1650–60; < Latin: an attack, literally, a rushing into, perhaps by haplology from *impetitus (though the expected form would be *impetītus; see appetite), equivalent to impetī-, variant stem of impetere to attack (im- im-1 + petere to make for, assault) + -tus suffix of v. action
1650–60; < Latin: an attack, literally, a rushing into, perhaps by haplology from *impetitus (though the expected form would be *impetītus; see appetite), equivalent to impetī-, variant stem of impetere to attack (im- im-1 + petere to make for, assault) + -tus suffix of v. action
Synonyms
1. stimulation, spur, boost.
1. stimulation, spur, boost.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Impetus
is an LSAT word you need to know.
So is biconditional. Does it mean:
| special stress laid upon, or importance attached to, anything; the intensity or force of expression or action |
| a proposition asserting that the existence or occurrence of one thing is dependent on the existence of another, as ?A if and only if B? |
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Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
impetus
1641, from L. impetus "attack, assault, onset, impulse, violence, vigor, force, passion," related to impetere "to attack," from in- "into" + petere "aim for, rush at" (see petition).
Online Etymology Dictionary, © 2010 Douglas Harper
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