The act of kissing; a kiss or the practice of kissing, from Latin terminology.
From Latin 'basiatio' (kissing) derived from 'basiare' (to kiss) and 'basium' (kiss). This noun form remained rare in English despite its classical roots.
Scholars and poets who wanted to discuss kissing in a very formal or classical way would use 'basiation'—it's the kind of word that makes something as simple as a kiss sound like an important historical or scholarly event.
Complete word intelligence in one call. Free tier — 50 lookups/day.