IPA: /ˌɒs.kjʊˈleɪ.ʃən/
KK: /ɑˈskjuː.leɪt/
The act of kissing or touching with the lips.
They shared a sweet osculation under the stars.
Osculation is formed from "osculum" (meaning little mouth or kiss) and the suffix "-ation" (indicating an action or process). The word refers to the act of kissing or the process of kissing.
Think of 'osculum' meaning a little mouth or kiss, which helps you remember that 'osculation' is the action of kissing.