IMPULSE

/ˈɪmpʌls/ ► audio Scrabble 11 Words With Friends 15

Definition

noun an instinctive motive. — synonyms: urge
noun a sudden desire. — synonyms: caprice, whim
noun the electrical discharge that travels along a nerve fiber. — synonyms: nerve_impulse, nervous_impulse, neural_impulse
noun (electronics) a sharp transient wave in the normal electrical state (or a series of such transients). — synonyms: pulsation, pulsing, pulse
noun the act of applying force suddenly. — synonyms: impulsion, impetus
noun an impelling force or strength. — synonyms: momentum

“The impulse to learn drove me to study night and day.”
“The total impulse from the impact will depend on the kinetic energy of the bullet.”