The Collaborative International Dictionary of English v.0.48:

Miniature \Min"i*a*ture\ (?; 277), n. [It. miniatura, fr. L.
   miniare. See Miniate, v.,Minium.]
   [1913 Webster]
   1. Originally, a painting in colors such as those in
      mediaeval manuscripts; in modern times, any very small
      painting, especially a portrait.
      [1913 Webster]

   2. Greatly diminished size or form; reduced scale.
      [1913 Webster]

   3. Lettering in red; rubric distinction. [Obs.]
      [1913 Webster]

   4. A particular feature or trait. [Obs.] --Massinger.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Miniature \Min"i*a*ture\, a.
   Being on a small scale; much reduced from the reality; as, a
   miniature copy.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Miniature \Min"i*a*ture\, v. t.
   To represent or depict in a small compass, or on a small
   scale.
   [1913 Webster]

WordNet (r) 3.0 (2006):

miniature
    adj 1: being on a very small scale; "a miniature camera"
    n 1: painting or drawing included in a book (especially in
         illuminated medieval manuscripts) [syn: miniature,
         illumination]
    2: a copy that reproduces a person or thing in greatly reduced
       size [syn: miniature, toy]

Moby Thesaurus II by Grady Ward, 1.0:

130 Moby Thesaurus words for "miniature":
   Elzevir, Lilliputian, abstract, abstraction, altarpiece, baby,
   baby-sized, bantam, banty, block print, collage, color print,
   compact, companion, copy, cursory, cyclorama, daub, dead ringer,
   depthless, diminutive, diptych, doll, double, duodecimo, duplicate,
   dwarf, effigy, engraving, exact likeness, fellow, few, footling,
   fresco, handy, head, icon, idol, illumination, illustration, image,
   inconsequential, inconsiderable, insignificant, itty-bitty,
   likeness, lilliputian, little, living image, living picture, low,
   match, mate, meager, micro, microcosm, microscopic, midget, mini,
   miniaturized, minikin, minimal, minny, minuscule, minute,
   mirroring, model, montage, mosaic, mural, negligible,
   no great shakes, panorama, petty, photograph, picayune, picayunish,
   picture, pocket, pocket edition, pocket-sized, pony, portrait,
   portraiture, portrayal, print, profile, puppet, pygmy, reflection,
   representation, reproduction, resemblance, rubbing, semblance,
   shadow, shallow, short, silhouette, similitude, simulacrum,
   skin-deep, small, small-scale, spit and image, spitting image,
   stained glass window, stencil, still life, subminiature,
   superficial, tableau, tapestry, teeny, teeny-weeny, tiny, toy,
   trace, tracing, trifling, triptych, trivial, twelvemo, twin,
   very image, very picture, vest-pocket, wall painting, wee, weeny