subarytenoid

The story

1. Proto-Indo-European*upó
2. Proto-Italic*supo
3. Latinsub
4. Latinsub-
5. Englishsub-
6. Ancient Greekᾰ̓ρῠ́ω (ărŭ́ō)
7. Ancient Greekᾰ̓ρῠτήρ (ărŭtḗr)
8. Ancient Greekᾰ̓ρῠ́ταινᾰ (ărŭ́taină)
9. Proto-Indo-European*weyd-
10. Proto-Indo-European*wéydos
11. Proto-Hellenic*wéidos
12. Ancient Greekεἶδος (eîdos)
13. Ancient Greekᾰ̓ρῠταινοειδής (ărŭtainoeidḗs)
14. New Latinarytaenoīdēs
15. Englisharytenoid
16. English todaysubarytenoid

From sub- + arytenoid.