The story
- Ancient GreekΜάγνης (Mágnēs)
- Ancient Greekμᾰ́γνης (mắgnēs)
- Old Frenchmagnete
- Ancient Greekμᾰ́γνης (mắgnēs)
- Latinmagnēs
- Middle Englishmagnete
- Englishmagnet
- Englishmagnet-
- Englishmagneto-
- Ancient Greekσφαῖρᾰ (sphaîră)
- Latinsphaera
- Late Latinsphēra
- Old Frenchsphere
- Middle Englishspere
- Englishsphere
- Englishmagnetosphere
- English todaymagnetospheric
From magnetosphere + -ic.
Etymology from Wiktionary, CC BY-SA 4.0.