English
summability
From sum + -ability.
Formed from sum + -ability
Proto-Indo-European *upó ‘up; from below’
…
Latin summus ‘highest’
Latin summa ‘highest point’
Old French summe
Middle English summe
English sum
Today it means
noun The condition of being summable.
Sources
Sources: Wiktionary, “summability”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / summability