English

interpectoral

From inter- + pectoral.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Latin pectus ‘chest, breast’

Latin pectorālis

Today it means

adj Between the pectoralis muscles.

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

Etymograph / interpectoral