|action in response to a stimulus of a system, a nerve or a muscle|
|a period of sleep during which most dreaming occurs as the eyes move under closed lids and the skeletal muscles are deeply relaxed|
|1.||an impelling force or motion; thrust; impetus|
|2.||a sudden desire, whim, or inclination: I bought it on an impulse|
|3.||an instinctive drive; urge|
|4.||tendency; current; trend|
|a. the product of the average magnitude of a force acting on a body and the time for which it acts|
|b. the change in the momentum of a body as a result of a force acting upon it for a short period of time|
|6.||physiol See nerve impulse|
|7.||electronics a less common word for pulse|
|8.||on impulse spontaneously or impulsively|
|[C17: from Latin impulsus a pushing against, incitement, from impellere to strike against; see |
impulse im·pulse (ĭm'pŭls')
A sudden pushing or driving force.
A sudden wish or urge that prompts an unpremeditated act or feeling; an abrupt inclination.
The electrochemical transmission of a signal along a nerve fiber that produces an excitatory or inhibitory response at a target tissue.
|impulse (ĭm'pŭls') Pronunciation Key