English

intraorbital

From intra- + orbital.

Proto-Indo-European *h₁én ‘in’

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

Latin *interus

Latin intrā ‘within’

Proto-Indo-European *h₃erbʰ- ‘to turn’

Latin orbita ‘a track or rut’

Medieval Latin orbitālis ‘Tracked, rutted’

Today it means

adj Within an atomic or molecular orbital

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

Etymograph / intraorbital