| 单词 | resin |
| 释义 | resin —resinlike, adj. /rez"in/, n. 1. any of a class of nonvolatile, solid or semisolid organic substances, as copal or mastic, that consist of amorphous mixtures of carboxylic acids and are obtained directly from certain plants as exudations or prepared by polymerization of simple molecules: used in medicine and in the making of varnishes and plastics. 2. a substance of this type obtained from certain pines; rosin. v.t. 3. to treat or rub with resin. [1350-1400; ME < OF resine < L resina, prob. < a non-IE language; cf. Gk rhetíne pine resin, from a related source] |
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