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Webster 1913 Edition

Noun.

[OF.

alumineor

, fr. L.

liminare

. See

An illuminator of manuscripts and books; a limner.

[Obs.]

Cowell.

, n.

One who colors or paints upon paper or parchment, giving light and ornament to letters and figures.

This is now written limner.

alluminor ‎(plural alluminors)

(obsolete) An illuminator of manuscripts and books; a limner.
(Can we find and add a quotation of Cowell to this entry?)