analemmatic
/ˌanəlɛˈmatɪk/adjective
Designating a sundial comprising a movable gnomon perpendicular to a dial plane with hour points arranged in an ellipse, the position of the gnomon at a particular time of year being determined by an analemma projection.
- For large dials, a person standing in the correct position can act as the gnomon..
Origin
Early 19th century; earliest use found in David Brewster (1781–1868), natural philosopher and academic administrator. From analemma + -atic.