synthetic dye n.
Any of the organic dyes originally derived from coal-tar derivatives, but currently synthesized from benzene and its derivatives.
noun 1. fuel in the form of liquid or gas (synthetic natural gas) manufactured from coal or in the form of oil extracted from shale or tar sands.
noun 1. elementary geometry, as distinct from analytic geometry.
noun 1. the philosophy of Herbert Spencer, intended as a synthesis of all the sciences.
- Synthetic phonics
noun 1. (functioning as sing) a method of teaching people to read by training them to pronounce sounds associated with particular letters in isolation and then blend them together Compare phonics (sense 2)