Source : Webster's Revised Unabridged Dictionary (1913)

Neo-Lamarckism \Ne`o-La*marck"ism\, n. (Biol.)
   Lamarckism as revived, modified, and expounded by recent
   biologists, esp. as maintaining that the offspring inherits
   characters acquired by the parent from change of environment,
   use or disuse of parts, etc.; -- opposed of {Neo-Darwinism}
   (which see, above). -- {Ne`o-La*marck"i*an}, a. & n.

Source : WordNet®

neo-Lamarckian
     adj : of or relating to a modern version of Lamarckism;
           "Neo-Lamarckian theories"