gnomonic

Sometimes gno·mon·i·cal

[noh-mon-ik]

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. gnomic.

4. of, relating to, or noting a map projection in which all great circles are depicted as straight lines.

   a gnomonic chart.

Word History and Origins

Origin of gnomonic¹

1595–1605; < Latin gnōmonicus “of, belonging to a gnomon” < Greek gnōmonikós. See gnomon, -ic