n. [ L. alumen, aluminis. See Alum. ] (Chem.) One of the earths, consisting of two parts of aluminium and three of oxygen,
☞ It is the oxide of the metal aluminium, the base of aluminous salts, a constituent of a large part of the earthy siliceous minerals, as the feldspars, micas, scapolites, etc., and the characterizing ingredient of common clay, in which it exists as an impure silicate with water, resulting from the decomposition of other aluminous minerals. In its natural state, it is the mineral corundum. [ 1913 Webster ]
n. (Chem.) A compound formed from the hydrate of aluminium by the substitution of a metal for the hydrogen. [ 1913 Webster ]
a. Combined with alumina. [ 1913 Webster ]
a. Capable of being illuminated. [ 1913 Webster ]
n. [ L. illuminans, -antis, p. pr. of illuminare. ] That which illuminates or affords light;
a. Illuminative. [ 1913 Webster ]
v. t.
v. i. To light up in token or rejoicing. [ 1913 Webster ]
a. [ L. illuminatus, p. p. ] Enlightened. Bp. Hall. [ 1913 Webster ]
n. One who is enlightened; esp., a pretender to extraordinary light and knowledge. [ 1913 Webster ]
adj. [ p. p. of illuminate. ]
‖n. pl. [ L. illuminatus. See Illuminate, v. t., and cf. Illuminee. ] Literally, those who are enlightened; -- variously applied as follows: -- [ 1913 Webster ]
a. Giving or producing light; used for illumination. [ 1913 Webster ]
Illuminating gas.
n. [ L. illuminatio: cf. F. illumination. ]
The illumination which a bright genius giveth to his work. Felton. [ 1913 Webster ]
Hymns and psalms . . . are framed by meditation beforehand, or by prophetical illumination are inspired. Hooker. [ 1913 Webster ]
n. Illuminism. [ R. ] [ 1913 Webster ]
a. [ Cf. F. illuminatif. ] Tending to illuminate or illustrate; throwing light; illustrative. “Illuminative reading.” Carlyle. [ 1913 Webster ]
n. [ L., an enlightener, LL. also, an illuminator of books. ]
a. Luminous. [ R. ] [ 1913 Webster ]
n.;
Where the great luminary . . .
Dispenses light from far. Milton. [ 1913 Webster ]
v. t. [ L. luminatus, p. p. of luminare to illumine, fr. lumen light. See Limn. ] To illuminate. [ Obs. ] [ 1913 Webster ]
n. Illumination. [ Obs. ] [ 1913 Webster ]
v. t. To enlighten again; to reillumine. [ 1913 Webster ]
n. The act or process of enlightening again. [ 1913 Webster ]