English

endomarginal

From endo- + marginal.

Proto-Indo-European *h₁n̥dóm ‘inside’

Proto-Hellenic *éndon

Ancient Greek ἔνδον ‘inner’

English endo-

Proto-Indo-European *mórǵs ‘boundary, border’

Latin margō ‘margin’

Medieval Latin marginālis

Today it means

adj On the inside of a margin

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

Etymograph / endomarginal