Gnomon

Definition of Gnomon

Gno´mon
n.1.
1.(Dialing) The style or pin, which by its shadow, shows the hour of the day. It is usually set parallel to the earth's axis.
2.(Astron.) 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.
3.(Geom.) 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.
4.The index of the hour circle of a globe.

Related Words

indicator, sundial
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Gnathotheca
Gnatling
Gnatworm
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Gnawer
Gneiss
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Gneissoid
Gneissoid granite
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Gnew
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Gnomic Poets
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Gnomonic projection
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Go
go figure
go one on one
Go to
go-around
go-as-you-please
Go-between
Go-by
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