Etymograph

English

teroxide

From ter- + oxide.

Formed from ter- + oxide

Proto-Indo-European *tri- ‘three’

Proto-Indo-European *trís ‘thrice (three times)’

Proto-Italic *tris

Old Latin *tris

Latin ter ‘three times’

English ter-

Proto-Indo-European *h₂eḱ- ‘sharp’

French oxyde

English oxide

Today it means

noun Synonym of trioxide.

Sources

Sources: Wiktionary, “teroxide”. 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 / teroxide

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