gnomon(redirected from gnomonical)
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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
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]
gnomon, 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.
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|Noun||1.||gnomon - 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