Source : Webster's Revised Unabridged Dictionary (1913)

Acrylic \A*cryl"ic\, a. (Chem.)
   Of or containing acryl, the hypothetical radical of which
   acrolein is the hydride; as, acrylic acid.

Source : WordNet®

acrylic
     n 1: polymerized from acrylonitrile [syn: {acrylic fiber}]
     2: a glassy thermoplastic; can be cast and molded or used in
        coatings and adhesives [syn: {acrylic resin}, {acrylate
        resin}]
     3: used especially by artists [syn: {acrylic paint}]
     4: a synthetic fabric