RUTHLESS
Ruth"less, a.

Defn: Having no ruth; cruel; pitiless.
Their rage the hostile bands restrain, All but the ruthless monarch
of the main. Pope.
— Ruth"less*ly, adv.
— Ruth"less*ness, n.

RUTIC
Ru"tic, a. Etym: [Cf. Rutaceous.] (Chem.)

Defn: pertaining to, or obtained from, rue (Ruta); as, rutic acid, now commonly called capric acid.

RUTILANT Ru"ti*lant (, a. Etym: [L. rutilans, p. pr. of rutilare to have a reddish glow, fr. rutilus red: cf. F. rutilant.]

Defn: Having a reddish glow; shining.
Parchments . . . colored with this rutilant mixture. Evelin.

RUTILATE
Ru"ti*late, v. i. Etym: [L. rutilare, rutilatum.]

Defn: To shine; to emit rays of light. [Obs.] Ure.

RUTILE
Ru"tile, n. Etym: [L. rutilus red, inclining to golden yellow.]
(Min.)

Defn: A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium dioxide, like octahedrite and brooklite.