synthetic chemical
41Chemical synthesis — In chemistry, chemical synthesis is purposeful execution of chemical reactions to get a product, or several products. This happens by physical and chemical manipulations usually involving one or more reactions. In modern laboratory usage, this… …
42synthetic rubber — noun any of various synthetic elastic materials whose properties resemble natural rubber • Syn: ↑rubber • Hypernyms: ↑synthetic, ↑synthetic substance • Hyponyms: ↑silicone rubber, ↑neoprene, ↑ …
43CHEMICAL CRAFTS AND INDUSTRIES — During the Middle Ages a number of crafts involving the use of chemical processes and a certain chemical knowledge were practiced by Jews. Jews sometimes dabbled in alchemy , which frequently led to results of importance to chemistry; the… …
44chemical science — noun the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions • Syn: ↑chemistry • Derivationally related forms: ↑chemic (for: ↑chemistry), ↑chemist (for: ↑ …
45synthetic — adj. & n. adj. 1 made by chemical synthesis, esp. to imitate a natural product (synthetic rubber). 2 (of emotions etc.) affected, insincere. 3 Logic (of a proposition) having truth or falsity determinable by recourse to experience (cf. ANALYTIC… …
46chemical dependency — addiction to drugs or alcohol. * * * ▪ drug use the body s physical and/or psychological addiction to a psychoactive (mind altering) substance, such as narcotics (narcotic), alcohol, or nicotine. Physical dependency on such chemicals as… …
47chemical — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ organic ▪ inorganic, synthetic ▪ dangerous, harmful, hazardous, poisonous, toxic …
48chemical — chem|i|cal1 W3S3 [ˈkemıkəl] n a substance used in chemistry or produced by a chemical process toxic/hazardous/dangerous chemicals ▪ the organic chemicals industry ▪ synthetic chemicals chemical 2 chemical2 W3 adj [only before noun] [Date: 1500… …
49synthetic diamond — ▪ chemistry man made diamond that is usually produced by subjecting graphite to very high temperatures and pressures. Synthetic diamond resembles natural diamond in most fundamental properties, retaining the extreme hardness, broad… …
50chemical wood — noun 1. : the wood of any of various trees used as a chemical raw material (as for the production of acetic acid, wood alcohol, or acetone by carbonization) 2. : chemical pulp * * * chemical wood noun Wood pulp broken down by the action of… …
