Quintuple

(verb.) increase fivefold; 'The population of China quintupled'.

(adj.) having five units or components .

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• The quintuple grade is designed more particularly for hotels, restaurants, clubs and other institutions where the wear is especially severe. 佚名. 神奇的知识之书.
• Men learnt so to fertilize the soil as to produce quadruple and quintuple the crops got from the same area in the seventeenth century. 赫伯特·乔治·威尔斯. 世界史纲.

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