| 单词 | hardpan |
| 释义 | hardpan /hahrd"pan'/, n. 1. any layer of firm detrital matter, as of clay, underlying soft soil. Cf. caliche, duricrust. 2. hard, unbroken ground. 3. the fundamental or basic aspect of anything; solid foundation; underlying reality: the hardpan of mathematical theory. [1810-20, Amer.; HARD + PAN1] |
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