Proto-Indo-European

*tri-

‘three, threefold’

Every word has its own definition in its root. These English words share one: Proto-Indo-European *tri-.

18 English words in this record descend from Proto-Indo-European *tri-, most familiar first.

• trial ← *tri-
• triple ← triplus ← *triplos ← *tri-
• trillion ← *tri-
• tertiary ← tertiārius ← tertius ← *tritios ← *tritós
• treble ← triplus ← *triplos ← *tri-
• trine ← trin ← trīnus ← *triznos ← *trís
• ternate ← ternus ← ter ← *tris ← *tris
• tierce ← tertius ← *tritios ← *tritós
• tercio ← tertius ← *tritios ← *tritós
• terce ← tertius ← *tritios ← *tritós
• terzina ← terzo ← tertius ← *tritios ← *tritós
• terzetto ← terzo ← tertius ← *tritios ← *tritós

More words from *tri-

• tertial
• tertiate
• tercine
• tertiparous
• tiercel
• tierceron

Etymograph / Proto-Indo-European *tri-