Heliotrope purple, a grayish purple color.

(He"li*o*tro`per) n. The person at a geodetic station who has charge of the heliotrope.

(He`li*o*trop"ic) a. (Bot.) Manifesting heliotropism; turning toward the sun.

(He`li*ot"ro*pism) n. [Helio- + Gr. to turn.] (Bot.) The phenomenon of turning toward the light, seen in many leaves and flowers.

(He"li*o*type) n. [Helio- + -type.] A picture obtained by the process of heliotypy.

(He`li*o*typ"ic) a. Relating to, or obtained by, heliotypy.

(He"li*o*ty`py) n. A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography.

(||He`li*o*zo"a) n. pl. [NL., fr. Gr. the sun + an animal.] (Zoöl.) An order of fresh-water rhizopods having a more or less globular form, with slender radiating pseudopodia; the sun animalcule.

(Hel`i*spher"ic Hel`i*spher"ic*al) a. [Helix + spheric, spherical.] Spiral.

Helispherical line(Math.). the rhomb line in navigation. [R.]

(He"li*um) n. [NL., fr. Gr. the sun.] (Chem.) A gaseous element found in the atmospheres of the sun and earth and in some rare minerals.

(He"lix) n.; pl. L. Helices E. Helixes [L. helix, Gr. fr. to turn round; cf. L. volvere, and E. volute, voluble.]

1. (Geom.) A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.

2. (Arch.) A caulicule or little volute under the abacus of the Corinthian capital.

3. (Anat.) The incurved margin or rim of the external ear. See Illust. of Ear.

4. (Zoöl.) A genus of land snails, including a large number of species.

The genus originally included nearly all shells, but is now greatly restricted. See Snail, Pulmonifera.

(Hell) n. [AS. hell; akin to D. hel, OHG. hella, G. hölle, Icel. hal, Sw. helfvete, Dan. helvede, Goth. halja, and to AS. helan to conceal. . Cf. Hele, v. t., Conceal, Cell, Helmet, Hole, Occult.]

1. The place of the dead, or of souls after death; the grave; — called in Hebrew sheol, and by the Greeks hades.

He descended into hell.
Book of Common Prayer.

Thou wilt not leave my soul in hell.
Ps. xvi. 10.

3. (Geodesy & Signal Service) An instrument for making signals to an observer at a distance, by means of the sun's rays thrown from a mirror.

4. (Min.) See Bloodstone (a).

  By PanEris using Melati.

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