| 单词 | synthetic |
| 释义 | synthetic (once / 1987 pages) 1nadj 2adj Something made of artificial material, not natural items, can be described as synthetic. Some football stadiums have synthetic grass, and a leisure suit from the 1970s might be made of synthetic fabric. The adjective synthetic usually describes things created by chemical synthesis (synthetic compound, synthetic drug, synthetic material), but it sometimes describes an emotion that is feigned or not genuine. A person who exudes only synthetic friendliness probably isn't someone you want to hang out with, for example. WORD FAMILYsynthetic: nonsynthetic, semisynthetic, synthetically, synthetics, synthetism USAGE EXAMPLESThe answer isn’t hard to understand: Synthetic dyes are quicker and easier to use and they produce more colors. Washington Post(Dec 30, 2016) Fentanyl, a synthetic, cheap opioid 50 times as powerful as heroin, helped fuel the crisis this year. Wall Street Journal(Dec 28, 2016) One recipient of the email was the Engineering Biology Research Consortium, a nonprofit dedicated to fostering and advancing synthetic biology research. New York Times(Dec 27, 2016) 1 1n a compound made artificially by chemical reactions Syn|Hypo|Hyper synthetic substance Plasticine a synthetic material resembling clay but remaining soft; used as a substitute for clay or wax in modeling (especially in schools) phosphora synthetic substance that is fluorescent or phosphorescent; used to coat the screens of cathode ray tubes rubber, synthetic rubberany of various synthetic elastic materials whose properties resemble natural rubber silicone rubbermade from silicone elastomers; retains flexibility resilience and tensile strength over a wide temperature range neoprenea synthetic rubber that is resistant to oils and aging; used in waterproof products buna, buna rubbermade by polymerizing butadiene butyl rubbersynthetic rubber made by polymerizing isobutylene chemical compound, compound (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight 2adj not genuine or natural "counterfeit rhetoric that flourishes when passions are synthetic"- George Will Syn counterfeit, imitative not genuine; imitating something superior 3adj not of natural origin; prepared or made artificially synthetic leather Syn man-made, semisynthetic artificial, unreal contrived by art rather than nature 4adj 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 Syn|Ant synthetical analytic, analytical using or skilled in using analysis (i.e., separating a whole--intellectual or substantial--into its elemental parts or basic principles) 5adj systematic combining of root and modifying elements into single words Syn|Ant agglutinative, polysynthetic forming derivative or compound words by putting together constituents each of which expresses a single definite meaning analytic, uninflected expressing a grammatical category by using two or more words rather than inflection isolatingrelating to or being a language in which each word typically expresses a distinct idea and part of speech and syntactical relations are determined almost exclusively by word order and particles 6adj artificial as if portrayed in a film 2Syn celluloid artificial, unreal contrived by art rather than nature adj of a proposition whose truth value is determined by observation or facts `all men are arrogant' is a synthetic proposition Syn|Ant synthetical a posteriori involving reasoning from facts or particulars to general principles or from effects to causes inductiveof reasoning; proceeding from particular facts to a general conclusion logicalcapable of or reflecting the capability for correct and valid reasoning analytic, analytical of a proposition that is necessarily true independent of fact or experience a prioriinvolving deductive reasoning from a general principle to a necessary effect; not supported by fact deductiveinvolving inferences from general principles logicalcapable of or reflecting the capability for correct and valid reasoning |
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