The story
- Proto-Indo-European*wréh₂ds
- Ancient Greekῥῐ́ζᾰ (rhĭ́ză)
- Englishrhizo-
- Ancient Greekσφαῖρᾰ (sphaîră)
- Latinsphaera
- Late Latinsphēra
- Old Frenchsphere
- Middle Englishspere
- Englishsphere
- Englishrhizosphere
- English todayrhizospheric
From rhizosphere + -ic.
Etymology from Wiktionary, CC BY-SA 4.0.