gnomonic

gnomonic [noh-mon-ik] ExamplesWord Origin adjective

1. of or relating to a gnomon or to a sundial.
2. of or relating to the measurement of time by a gnomon or a sundial.
3. gnomic2.
4. of, relating to, or noting a map projection in which all great circles are depicted as straight lines: a gnomonic chart.

Sometimes gno·mon·i·cal [noh-mon-i-kuh l] /noʊˈmɒn ɪ kəl/. Origin of gnomonic 1595–1605; Latin gnōmonicus “of, belonging to a gnomon” Greek gnōmonikós. See gnomon, -ic Examples from the Web for gnomonic Historical Examples of gnomonic

Another kind of projection in common use is the “gnomonic projection” (fig. 12).

Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7

Various

Gnomonic and conical projections are also used for the polar charts, differing little from the foregoing for moderate areas.

Nautical Charts

G. R. Putnam

A modified or composite course can readily be laid out on a gnomonic chart.

Nautical Charts

G. R. Putnam

The distortion, however, is necessarily enormous when the celestial sphere is presented in only six gnomonic maps.

Half-hours with the Telescope

Richard A. Proctor