noun Date: 15th century rhythmical throbbing or vibrating (as of an artery), a periodically recurring alternate increase and decrease of a quantity (as pressure, volume, or voltage)
PULSATION
Meaning of PULSATION in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012