IPA: /ˌpæl.pɪˈteɪ.ʃən/
KK: /pælˈpɪteɪʃən/
A fast or irregular heartbeat that can feel like a fluttering or pounding in the chest.
After running up the stairs, I felt a strong palpitation in my chest.
Palpitation → It is formed from "palpitare" (meaning to throb or flutter) and the suffix "-ion" (indicating an action or process). The word "palpitation" refers to the action of the heart throbbing or fluttering, often felt as a rapid heartbeat.
Think of your heart 'throbbing' ('palpitare') — that's what a palpitation feels like, an action of your heart beating rapidly.