gnomon

gno·mon  (nmn, -mn)

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.

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[Latin gnmn, from Greek, interpreter, pointer of a sundial, from gignskein, to know; see gn- in Indo-European roots.]

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gno·monic, gno·moni·cal adj.

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gnomon [ˈnəʊmɒn]

n

1. (Miscellaneous Technologies / 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

[from Latin, from Greek: interpreter, from gignōskein to know]

gnomonic  adj

gnomonically  adv

Thesaurus

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