gnomonics

noun
UK /nəʊˈmɒnɪks/
US /noʊˈmɑːnɪks/

Gnomonics is the study of sundials and how their shadows tell time.

In gnomonics class, we learned how a stick's shadow can show what time it is.


OTHER MEANINGS

2. The art or skill of making sundials.

Her hobby of gnomonics led her to build a sundial in the garden.

3. The mathematical principles used to design sundials.

The book explains the gnomonics behind placing the gnomon at the right angle.

4. The branch of science dealing with the sun's shadow as a time indicator.

Ancient scholars studied gnomonics to improve their calendars.