English

intragrain

From intra- + grain.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁énteros ‘inside, within’

Latin *interus

Latin intrā ‘within’

Proto-Indo-European *ǵerh₂- ‘to grow old, to mature’

…

Proto-Italic *grānom

Latin grānum ‘seed’

Old French grain

Middle English greyn ‘a grain’

English grain

Today it means

adj Within a grain

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

Etymograph / intragrain