/
sɪnˈθɛtɪk/
adj.
   - made by chemical synthesis, especially to imitate a natural product. ▸not genuine; unnatural. 
- Logic  having truth or falsity determinable by recourse to experience. Compare with analytic.
- Linguistics  (of a language) tending to use inflections rather than word order to express grammatical structure. Contrasted with analytic.
n.
 a synthetic substance, especially a textile fibre.
Derivative
- synthetical adj.
- synthetically adv.
Etymology
C17: from Fr. synthétique or mod. L. syntheticus, from Gk sunthetikos, based on suntithenai ‘place together’.