The Collaborative International Dictionary of English v.0.48:

Miniate \Min"i*ate\, v. t. [imp. & p. p. Miniated; p. pr. &
   vb. n. Miniating.] [L. miniatus, p. p. of miniare. See
   Minium.]
   To paint or tinge with red lead or vermilion; also, to
   decorate with letters, or the like, painted red, as the page
   of a manuscript. --T. Wharton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Miniate \Min"i*ate\, a.
   Of or pertaining to the color of red lead or vermilion;
   painted with vermilion.
   [1913 Webster]

WordNet (r) 3.0 (2006):

miniate
    v 1: paint with red lead or vermilion
    2: decorate (manuscripts) with letters painted red; "In this
       beautiful book, all the place names are rubricated" [syn:
       miniate, rubricate]