The only free and comprehensive online etymological dictionary of the Spanish language
pulsar (Verb) "to push (a button);" "to throb"
16th cent. From Latin pulsare "to push," "to urge," a frequentive from pellere "to push," "to strike." From Proto-Italic *pelna-C- "to approach." From Proto-Indo-European *pl̥-n-h2- 'id.'
Indo-European
Romance
Portuguese puxar, French pousser, Italian pulsare, Romanian pusa
Italic
Umbrian ampentu "he brought near"
Celtic
Old Irish adella "to visit," Middle Welsh el "goes," Middle Breton yal 'id.,' Cornish gallas "went"
Hellenic
Ancient Greek πίλναμαι (pílnamai) "to approach"
Armenian
Armenian elanem "exit"