| 单词 |
apothem |
| 释义 |
apothem|ˈæpəθɪm| [mod. f. Gr. ἀποτιθέ-ναι to set off, put aside, deposit, etc.; after θέµα, from the simple τιθέναι to place; cf. Fr. apothème.] 1. Math. In a regular polygon: The perpendicular dropped from the centre upon one of the sides. Cf. off-set. (In mod. Dicts.) 2. ‘A term applied by Berzelius to the insoluble brown deposit which forms in vegetable extracts..exposed to the air.’ Watts Dict. Chem. |
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