Meaning of PULSE in English

I. noun Etymology: Middle English puls, probably from Anglo-French puuiz gruel, from Latin pult-, puls, probably from Greek poltos Date: 13th century the edible seeds of various crops (as peas, beans, or lentils) of the legume family, II. noun see: felt Date: 14th century 1. the regular expansion of an artery caused by the ejection of blood into the arterial system by the contractions of the heart, the palpable beat resulting from such ~ as detected in a superficial artery, 2. underlying sentiment or opinion or an indication of it, vitality , 3. rhythmical beating, vibrating, or sounding, beat , throb , 4. a transient variation of a quantity (as electric current or voltage) whose value is normally constant, b. an electromagnetic wave or modulation thereof of brief duration, a brief disturbance of pressure in a medium, a dose of a substance especially when applied over a short period of time , III. verb (~d; pulsing) Date: 15th century intransitive verb to exhibit a ~ or pulsation ; throb , transitive verb to drive by or as if by a pulsation, to cause to pulsate, 3. to produce or modulate (as electromagnetic waves) in the form of ~s , to cause (an apparatus) to produce ~s, ~r noun

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.