The Collaborative International Dictionary of English v.0.48:

morph \morph\ (m[^o]rf), n. (Linguistics)
   A sequence of phonemes, often a word fragment, which
   constitutes the minimum unit of meaning or syntax within a
   given word. A morph may be one of several variants of a
   morpheme, depending for its individal form on the context in
   which it occurs. Thus the morphs -s and -es are variants of
   the morpheme by which the plural form of an English noun is
   expressed.
   [PJC]

The Collaborative International Dictionary of English v.0.48:

morph \morph\ (m[^o]rf), v. i. & t.
   To transform smoothly in imperceptible steps from one image
   to another, on a computer screen.
   [PJC]

WordNet (r) 3.0 (2006):

morph
    v 1: cause to change shape in a computer animation; "The
         computer programmer morphed the image"
    2: change shape as via computer animation; "In the video,
       Michael Jackson morphed into a panther"