Where does “trizonal” come from?

trizonal (English) comes from English zonal, from English Zone, from French zone, from German Zone, from Italian zona, from Spanish zona, from Portuguese zona, from Russian зо́на — belt, sash.

trizonal (English): Having or involving three zones

Definitions

  1. Having or involving three zones

Ancestry of “trizonal”, step by step

trizonal traces back through two separate lines of ancestry.

via English zonal

StepLanguageWordMeaning
1EnglishzonalDivided into zones; Related to, associated with,...
2EnglishZoneEach of the five regions of the earth's surface into which it was divided by climatic differences, namely the torrid zone (between the tropics), two temperate zones (between the tropics and the polar circles), and two frigid zones (within the polar circles)
3Frenchzonezone; first-person singular present indicative of...
4GermanZonezone
5Italianzonaa zone, area or district
6Spanishzonazone, district, area
7Portuguesezonazone; area, region; mess
8Russianзо́наzone
9Latinzōnabelt, girdle
10Ancient Greekζώνηbelt, sash

via English tri

StepLanguageWordMeaning
1Englishtritriathlon; triangle
2Proto-Indo-Europeantréyesthree
Every word from Ancient Greek ζώνηEvery word from Latin zōnaEvery word from Russian зо́на