Where does “multi-tier” come from?

multi-tier (English) comes from English tier, from Middle French tier, from Old French tire, from Latin tyrius, from Latin Tyrus, from Ancient Greek τυρός, from Proto-Hellenic tūrós, from Proto-Indo-European tuh₂-ró-s — to swell; to crowd; to be strong.

Ancestry of “multi-tier”, step by step

multi-tier traces back through two separate lines of ancestry.

via English tier

StepLanguageWordMeaning
1EnglishtierOne who ties; Something that ties; A child's...
2Middle Frenchtier
3Old Frenchtirerank, sequence, order, kind; row; oriental cloth...
4LatintyriusTyrian, of Tyre
5LatinTyrusTyre
6Ancient Greekτυρόςcheese
7Proto-Hellenictūróscheese
8Proto-Indo-Europeantuh₂-ró-s
9Proto-Indo-Europeantewh₂-to swell; to crowd; to be strong

via English multi

StepLanguageWordMeaning
1EnglishmultiA multituberculate; Neolamprologus multifasciatus
2EnglishmultituberculateHaving molars with multiple rows of cusps; Any of...
3EnglishtuberculateHaving tubercles; Tubercular
4Latintuberculatuswarty, tuberculate
5Latintūberculuma small swelling, bump, or protuberance; a boil, pimple, tubercle
6Latin-culusAlternative form of -ulus; added to a noun to...
7Proto-Italic*-kelosDiminutive suffix
Every word from Proto-Indo-European tewh₂-