emarginate

botanyof leavesWith the outline of the margin more or less concave in places, usually at the apex.

botanymycologyHaving roughly the same height or width for most of its length, becoming much shallower or narrower before reaching the attachment point.

“In this group of mushrooms, the attachment of the gills to the stipe is emarginate.”

zoologyanatomyHaving a margin that has concave edges as though with parts removed or notched.

mineralogyOf a crystal: having edges or corners of the primitive form beveled, crossed by a face.

To take away the margin of.

To lose the margin.

To marginalize.