English

interfraction

From inter- + fraction.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *bʰreg- ‘to break’

Medieval Latin fractio ‘a fragment, portion’

Old French fraccion

Middle English fraccioun ‘a breaking’

Today it means

adj Between fractions.

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

Etymograph / interfraction