English

interpulmonary

From inter- + pulmonary.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *pléu-mon-

Latin pulmō ‘lung’

Latin pulmōnārius ‘of the lungs’

Today it means

adj Between the lungs.

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

Etymograph / interpulmonary