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 (nō′mŏn′, -mən)
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.

[Latin gnōmōn, from Greek, interpreter, pointer of a sundial, from gignōskein, to know; see gnō- in Indo-European roots.]

gno·mon′ic, gno·mon′i·cal adj.


1. (Horology) the stationary arm that projects the shadow on a sundial
2. (Mathematics) a geometric figure remaining after a parallelogram has been removed from one corner of a larger parallelogram
[C16: from Latin, from Greek: interpreter, from gignōskein to know]
gnoˈmonic, gnoˈmonical adj
gnoˈmonically adv


(ˈnoʊ mɒn)

1. the raised part of a sundial that casts the shadow; a style.
2. the part of a parallelogram that remains after a similar parallelogram has been taken away from one of its corners.
[1540–50; < Latin gnōmōn pin of a sundial < Greek gnṓmōn literally, interpreter, discerner]


, gnomonics - A gnomon is the pillar or rod that casts a shadow on a sundial; gnomonics is the art or science of dialing or of constructing dials to show the hour of the day by the shadow of a gnomon.
See also related terms for pillar.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gnomon - indicator provided by the stationary arm whose shadow indicates the time on the sundialgnomon - indicator provided by the stationary arm whose shadow indicates the time on the sundial
indicator - a device for showing the operating condition of some system
sundial - timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial
References in classic literature ?
The square, for instance, if a gnomon is applied to it, undergoes increase but not alteration, and so it is with all other figures of this sort.
Importantly, as an astronomer, he took the lead in installing the world's first astronomical gnomon in the Florence Duomo, a hole near the top of the dome that was incorporated into a camera-obscura-type installation to track the movements of the sun and determine the timing of movable festivals such as Easter.
Today, in Sheffield, there are many great examples of home grown beers, ciders and wines through to our magnificent vegetables, honeys and mushrooms and also the top-end paddock to plate experience like Mount Gnomon Farm.
With the use of a gnomon, measurements are given for the relative lengths of days and nights throughout the year.
Type A: Move the rightmost letter to the left word edge example: AEGEAN Type B: Move the leftmost letter to the right edge example: GNOMON Type C: Move either the leftmost letter to the right edge or the rightmost letter to the left edge example: PAPA
They obtained a suitable stone, probably a flagstone, and chiselled in the design, adding the metal gnomon which casts the shadow.
Eventually, the core of the enigma consisted in the shape of gnomon resides in the removed part--in its absence or, so to say, the invisible, always imagined presence.
It also boasts the Sundial Bridge, a cantilevered, glass-decked pedestrian bridge over the Sacramento River with a stunning white gnomon pointing skyward at a 42-degree angle.
Lost Letter, gloss on the next-to-last section of "The Vision of Empire"; rpt Gnomon 41 and Various Hands 18)
of the porch was a vertical sun-dial, whose gnomon swayed loosely
After Arendt published her dissertation as a book in 1929, it was reviewed in three academic journals, notably, in different disciplines: Kantstudien for philosophy, Zeitschrift fur Kirchengeschichte for theology, and Gnomon for classical studies (Hessen 1931, Eger 1930, Zepf 1932).