| 单词 | free radical |
| 释义 | free radical (once / 76254 pages) n WORD FAMILY free radical: free radicals USAGE EXAMPLESThis property was exploited to develop the drug, a compound that releases destructive tumour-busting “free radical” molecules when activated by laser light. The Guardian(Dec 20, 2016) Ergothioneine is an antioxidant that appears to protect our cells from damage by unhealthy free radicals. Washington Post(Oct 10, 2016) “Overheating breaks down the nutritional composition of the oil, changes the flavor and releases harmful free radicals,” said Leslie Beck, a Toronto-based dietitian and author. New York Times(Aug 26, 2016) n an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule in the body free radicals are high-energy particles that ricochet wildly and damage cells Syn|Hyper radical atom (physics and chemistry) the smallest component of an element having the chemical properties of the element |
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