What is the meaning of synthetic?

noun

• A compound made artificially by chemical reactions.
  • synonyms: synthetic substance

adjective

• Not of natural origin; prepared or made artificially.
  • usage: "man-made fibers"; "synthetic leather"
  • synonyms: man-made, semisynthetic
• Involving or of the nature of synthesis (combining separate elements to form a coherent whole) as opposed to analysis."limnology is essentially a synthetic science composed of elements... That extend well beyond the limits of biology- P. S. Welch
  • synonyms: synthetical
• Systematic combining of root and modifying elements into single words.
• Of a proposition whose truth value is determined by observation or facts.
  • usage: "`all men are arrogant' is a synthetic proposition"
  • synonyms: synthetical
• Artificial as if portrayed in a film.
  • usage: "a novel with flat celluloid characters"
  • synonyms: celluloid
• Not genuine or natural. "counterfeit rhetoric that flourishes when passions are synthetic- George Will