Wordnet 3.0
ADJECTIVE (1)
1. 
 not of natural origin; 
 prepared or made artificially; 
- Example: "man-made fibers"- Example: "synthetic leather"[syn: man-made, semisynthetic, synthetic]
WordNet (r) 3.0 (2006):
semisynthetic
    adj 1: not of natural origin; prepared or made artificially;
           "man-made fibers"; "synthetic leather" [syn: man-made,
           semisynthetic, synthetic]