Where does “tri-tiered” come from?

tri-tiered (English) comes from English tri, from Proto-Indo-European tréyes — three.

tri-tiered (English): Having three tiers

Definitions

  1. Having three tiers

Ancestry of “tri-tiered”, step by step

tri-tiered traces back through two separate lines of ancestry.

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree

via English tiered

StepLanguageWordMeaning
1Englishtieredsimple past tense and past participle of tier;...
Every word from Proto-Indo-European tréyes →Every word from English tri →