English

heliobiology

From helio- + biology.

Proto-Indo-European *sóh₂wl̥ ‘sun’

Proto-Hellenic *hāwélios ‘sun’

Ancient Greek ἥλιος ‘sun’

Proto-Indo-European *gʷeyh₃- ‘to live’

Ancient Greek βίος ‘life’

New Latin biologia ‘biology’

Today it means

noun The (study of the) effect of solar activity on life (both animal and plant)

Language periods are conventional ranges, not dates for this word.

Etymograph / heliobiology