Etymograph

English

triatomic

From tri- + atomic.

A compound of tri- + atomic

Proto-Indo-European *tri- ‘three, threefold’

Proto-Italic *tri- ‘three, tri-’

English tri-

Today it means

adj Consisting of three atoms.

Sources

Sources: Wiktionary, “triatomic”. 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 / triatomic

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