English

isallobar

From is- + allo- + bar.

Formed from is- + allo- + bar

Proto-Indo-European *h₂el- ‘beyond, other’

Proto-Indo-European *h₂élyos ‘other, another’

Proto-Hellenic *áľľos

Ancient Greek ἄλλος ‘other’

English allo-

Vulgar Latin *barra

Old French barre ‘beam, bar, gate, barrier’

Middle English barre

English bar

Today it means

noun A line joining points of equal pressure change during a specific time interval, especially over three hours.

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

Etymograph / isallobar