单词 | gnomon |
释义 | gno·mon ![]() n. 1. An object, such as the style of a sundial, that projects a shadow used as an indicator. 2. The geometric figure that remains after a parallelogram has been removed from a similar but larger parallelogram with which it shares a corner. [Latingnōmōn, fromGreek, interpreter, pointer of a sundial, fromgignōskein, to know; see gnō- in the Appendix of Indo-European roots.] gno·monic, gno·moni·caladj. ![]() ![]() top: on a sundial bottom: A gnomon of the parallelogram ABCD is the shaded figure HBCDKL. |
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