English

extraessential

extra- + essential

Proto-Indo-European *h₁éǵʰs ‘out’

Proto-Indo-European *h₁eǵʰsteros

Proto-Italic *eksteros

Latin exter ‘being on the outside’

Latin extrā ‘outside, except, beyond’

Latin essentia ‘being’

Late Latin essentiālis

Today it means

adj Outside or beyond the essence of something.

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

Etymograph / extraessential