| 单词 | gnomon |
| 释义 | gnomon n. 1. the rod or pin etc. on a sundial that shows the time by the position of its shadow. 2. Geom. the part of a parallelogram left when a similar parallelogram has been taken from its corner. 3. Astron. a column etc. used in observing the sun's meridian altitude. Derivatives gnomonic adj. Etymology: F or L gnomon f. Gk gnomon indicator etc. f. gignosko know |
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