Webster's Revised Unabridged Dictionary · 1913

Emarginate

Emarginate , transitive verb

[Latin emarginare; e out + marginare to furnish with a margin, from margo margin.]

To take away the margin of.

Emarginate , adjective

1.
Having the margin interrupted by a notch or shallow sinus.
2.
(Botany) Notched at the summit.
3.
(Cryst.) Having the edges truncated.

Also: Emarginated