English
extratropic
From extra- + tropic.
Proto-Indo-European *h₁éǵʰs ‘out’
Proto-Indo-European *h₁eǵʰsteros
Proto-Italic *eksteros
Latin exter ‘being on the outside’
Latin extrā ‘outside, except, beyond’
English extra-
Proto-Indo-European *trep- ‘to turn’
Ancient Greek τρέπω ‘turn’
Ancient Greek τροπή ‘turn; solstice’
Ancient Greek τροπικός ‘of a turn; of the solstice’
Late Latin tropicus ‘of or pertaining to the solstice’
English tropic
Today it means
adj Relating to the extratropics.
Language periods are conventional ranges, not dates for this word.
Etymograph / extratropic