—synthetically, adv./sin thet"ik/, adj.1. of, pertaining to, proceeding by, or involving synthesis (opposed to analytic).2. noting or pertaining to compounds formed through a chemical process by human agency, as opposed to those of natural origin: synthetic vitamins; synthetic fiber.3. (of a language) characterized by a relatively widespread use of affixes, rather than separate words, to express syntactic relationships: Latin is a synthetic language, while English is analytic. Cf. analytic (def. 3), polysynthetic (def. 1).4. Also, synthetical. Logic. of or pertaining to a noncontradictory proposition in which the predicate is not included in, or entailed by, the subject.5. not real or genuine; artificial; feigned: a synthetic chuckle at a poor joke.6. Jewelry.a. noting a gem mineral manufactured so as to be physically, chemically, and optically identical with the mineral as found in nature.b. (not in technical use) noting a gem mineral manufactured and pigmented in imitation of a natural gemstone of that name.n.7. something made by a synthetic, or chemical, process.8. synthetics.a. substances or products made by chemical synthesis, as plastics or artificial fibers.b. the science or industry concerned with such products.[1690-1700; < NL syntheticus < Gk synthetikós, equiv. to synthet(ós) placed together, verbid of syntithénai to put together (syn- SYN- + the-, s. of tithénai to put, place + -tos verbid suffix) + -ikos -IC]Syn. 5. fake, phony, counterfeit, sham.
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