Defn: A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.

3. (Astron.)

Defn: The point in the heavens at which the apparent paths of shooting stars meet, when traced backward, or whence they appear to radiate.

RADIANT ENGINE
Radiant engine. (Mach.)

Defn: A semiradial engine. See Radial engine, above.

RADIANTLY
Ra"di*ant*ly, adv.

Defn: In a radiant manner; with glittering splendor.

RADIARY
Ra"di*a*ry, n. Etym: [Cf. F. radiaire.] (Zoöl.)

Defn: A radiate. [Obs.]

RADIATA
Ra`di*a"ta, n. pl. Etym: [NL., fr. radiatus, p. p. See Radiate.]
(Zoöl.)