| 单词 | extraction |
| 释义 | extraction (once / 2411 pages) 1n 2n Extraction is the action of removing something. For example, when the dentist yanks out your rotten tooth, the extraction is complete! In addition to this wince-inducing meaning, the noun extraction is the process of separating out something from a chemical mixture or compound. Take decaffeinated coffee — the caffeine is removed by extraction, so you've got science to thank for not being jittery after breakfast. Extraction can also refer to your family background. If you are of Greek extraction, for example, your family history can be traced back to Greece. WORD FAMILYextraction: extractions+/extract: extractable, extracted, extractible, extracting, extraction, extractor, extracts/extractor: extractors USAGE EXAMPLESIf these costs were included in the price of fossil-fuel extraction and consumption, the price would no longer be “right” for the exploitation of ANWR. Seattle Times(Dec 27, 2016) Across Tibetan parts of China, protests regularly erupt against mineral extraction, according to a 2015 report by Tibet Watch. Washington Post(Dec 25, 2016) Egypt’s industrial sector is largely based on energy extraction and production, which employs relatively few people and fluctuates with oil prices. The New Yorker(Dec 25, 2016) 1 1n the action of taking out something (especially using effort or force) the dentist gave her a local anesthetic prior to the extraction Hyper remotion, removal the act of removing 2n the process of obtaining something from a mixture or compound by chemical or physical or mechanical means 2Hypo|Hyper decoction (pharmacology) the extraction of water-soluble drug substances by boiling dehydration, desiccation, drying up, evaporationthe process of extracting moisture elutionthe process of extracting one material from another by washing with a solvent to remove adsorbed material from an adsorbent (as in washing of loaded ion-exchange resins to remove captured ions); used to obtain uranium ions infusionthe process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water) beneficiation, mineral dressing, mineral extraction, mineral processing, ore dressing, ore processingcrushing and separating ore into valuable substances or waste by any of a variety of techniques freeze-drying, lyophilisation, lyophilizationa method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes inspissationthe process of thickening by dehydration action, activity, natural action, natural process a process existing in or produced by nature (rather than by the intent of human beings) n properties attributable to your ancestry Syn|Hypo|Hyper descent, origin full blood descent from parents both of one pure breed ancestry, derivation, filiation, lineage inherited properties shared with others of your bloodline |
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