The story
- Proto-Indo-European*upó
- Ancient Greekὑπό (hupó)
- Proto-Indo-European*bʰuH-
- Proto-Indo-European*bʰuHyéti
- Ancient Greekφῠ́ω (phŭ́ō)
- Ancient Greekφύσις (phúsis)
- Ancient Greekὑπόφυσις (hupóphusis)
- English todayhypophysis
Learned borrowing from Ancient Greek ὑπόφυσις (hupóphusis, literally “attachment underneath”). By surface analysis, hypo- + -physis.
Etymology from Wiktionary, CC BY-SA 4.0.