Gnomon

[nәumɔn]

解释:

(noun.) indicator provided by the stationary arm whose shadow indicates the time on the sundial.

整理:劳拉--From WordNet

解释:

(n.) The style or pin, which by its shadow, shows the hour of the day. It is usually set parallel to the earth's axis.

(n.) A style or column erected perpendicularly to the horizon, formerly used in astronomocal observations. Its principal use was to find the altitude of the sun by measuring the length of its shadow.

(n.) The space included between the boundary lines of two similar parallelograms, the one within the other, with an angle in common; as, the gnomon bcdefg of the parallelograms ac and af. The parallelogram bf is the complement of the parallelogram df.

(n.) The index of the hour circle of a globe.

录入:斯科特

同义词及近义词：

n. Style (of a dial).

整理:帕斯夸里

解释:

n. the pin of a dial whose shadow points to the hour: the index of the hour-circle of a globe: (geom.) the name given to the sum of any three of the parts of a rectangle when divided into four parts by cross-lines parallel to its sides: interpreter as in Bengel's Gnomon Novi Testamenti.—adjs. Gnomon′ic -al pertaining to the art of dialling.—adv. Gnomon′ically.—ns. Gnomon′ics the art of dialling; Gnomonol′ogy a treatise on dialling.

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