[f. L. ēmargināt- ppl. stem of ēmarginā-re to remove the edge.]

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  † 1.  trans. To remove the morbid matter from the edges of wounds, etc. Obs.–0

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1656.  Blount, Glossogr., Emarginate, to take away the scurf about the brims of wounds or soars.

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  2.  Crystallography. (See quot. 1817 under EMARGINATED.)

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  3.  Optics. Of the effects of unequal refraction: To emphasize or double the contour lines of (an object embedded, e.g., in a jelly).

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1881.  Lankester, in Jrnl. Microsc. Sc., Jan., 127. These groups … are strongly emarginated by the difference of refractive index between their substance and that of the material in which they are deposited.

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