Defn: An instrument for making signals to an observer at a distance, by means of the sun's rays thrown from a mirror.
4. (Min.)
Defn: See Bloodstone (a). Heliotrope purple, a grayish purple color.
HELIOTROPER
He"li*o*tro`per, n.
Defn: The person at a geodetic station who has charge of the heliotrope.
HELIOTROPIC
He`li*o*trop"ic, a. (Bot.)
Defn: Manifesting heliotropism; turning toward the sun.
HELIOTROPISM
He`li*ot"ro*pism, n. Etym: [Helio- + Gr. (Bot.)
Defn: The phenomenon of turning toward the light, seen in many leaves and flowers.
HELIOTYPE
He"li*o*type, n. Etym: [Helio- + -type.]