Where does “tri-city” come from?

tri-city (English) comes from English city, from Middle English cite, from Old French citet, from Latin cīvitās, from Proto-Italic keiwis, from Proto-Indo-European ḱey- — to be lying down; to settle.

tri-city (English): A geographic region consisting of three distinct, neighboring municipalities that share a regional economy, transportation network, and cultural identity

Definitions

  1. A geographic region consisting of three distinct, neighboring municipalities that share a regional economy, transportation network, and cultural identity

Ancestry of “tri-city”, step by step

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

via English city

StepLanguageWordMeaning
1EnglishcityA large settlement, bigger than a town; sometimes...
2Middle Englishcitecity
3Old FrenchcitetAlternative form of cité
4Latincīvitās—
5Proto-Italickeiwissociety; citizen
6Proto-Indo-Europeanḱey-to be lying down; to settle

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree
Every word from Proto-Indo-European ḱey- →Every word from Proto-Italic keiwis →Every word from Latin cīvitās →
tri-city — Etymology, Origin & Word History | Etymology Explorer