词典释义：
释义
n.
the most perfect or typical example of a quality or class
典范，范例
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he was the quintessence of political professionalism .他是典型的职业政治家。
the aspect of something regarded as the intrinsic and central constituent of its character
精髓；本质；关键
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we were all brought up to believe that advertising is the quintessence of marketing.我们大家从小接收教育，相信广告是市场营销的关键。
[count noun]a refined essence or extract of a substance
（从物质中提取的）精华。
(in classical and medieval philosophy)a fifth substance in addition to the four elements, thought to compose the heavenly bodies and to be latent in all things
（古典和中世纪哲学中除空气、水、火、土四要素以外的）第五要素，以太。
易错必背词
词源
"late Middle English （as a term in philosophy）： via French from medieval Latin
