adj.1. Relating to, involving, or of the nature of synthesis.
2. Chemistry Produced by synthesis, especially not of natural origin.
3. a. Prepared or made artificially: synthetic leather.
b. Not natural or genuine; artificial or contrived: "counterfeit rhetoric that flourishes when passions are synthetic" (George F. Will).
4. Linguistics Relating to or being a language, such as Latin or Russian, that uses inflectional affixes to express syntactic relationships.
5. Logic & Philosophy Relating to or being a proposition that attributes to a subject a predicate not inherent in the subject and that does not result in a contradiction if negated.
6. Of or relating to a financial instrument or investment that consists entirely of derivatives, especially swap contracts.