gnomonic
adjective
gno·mon·ic
(ˈ)nō¦mänik
variants or less commonly gnomonical
-änə̇kəl
1
: of or relating to the gnomon of a sundial or its use in telling time
2
: gnomic
Word History
Etymology
gnomonic from Latin gnomonicus, from Greek gnōmonikos, from gnōmon-, gnōmōn pointer on a sundial + -ikos -ic; gnomonical from Latin gnomonicus + English -al