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A crystallized, transparent mineral of the Zeolite family. It is a hydrous silicate of alumina and lime.

A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165.9. Its salts are rose-colored and give characteristic spectra. Its sesquioxide is called erbia.

d; not leaning or bent; not prone; as, to stand erect. Two of far nobler shape, erect and tall. Milton. Among the Greek colonies and churches of Asia, Philadelphia is still erect -- a column of ruins. Gibbon.

A colorless crystalline substance, C20H22O10, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid.

A colorless crystalline substance, C4H6.(OH)4, of a sweet, cooling taste, extracted from certain lichens, and obtained by the decomposition of erythrin; -- called also erythrol, erythroglucin, erythromannite, pseudorcin, cobalt bloom, and under the name phycite obtained from the alga Protococcus vulgaris. It is a tetra…

A crystalline substance obtained from diseased bile, which becomes blood-red when acted on by nitric acid or ammonia.

A white crystalline alkaloid, extracted from sassy bark (Erythrophleum Guineense).

A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine.

A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

An unfermentable sugar, obtained as an uncrystallizable sirup by the decomposition of melitose; also obtained from a Tasmanian eucalyptus, -- whence its name.

a fine color. Euchroic acid (Chem.), an organic, imide acid, obtained as a colorless crystalline substance, C12H4N2O8 by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance (euchrone), -- hence its name.

A colorless, crystalline substance extracted from oil of cloves; -- called also clove camphor.

A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; -- called also eupittonic acid. [Written also eupitton.]

A metallic element of the rare-earth group, discovered spectroscopically by Demarcay in 1896. Symbol, Eu; at. wt., 152.0.

taining to, derived from, or resembling, euxanthin. Euxanthic acid (Chem.), a yellow, crystalline, organic acid, extracted from euxanthin.

A brownish black mineral with a metallic luster, found in Norway. It contains niobium, titanium, yttrium, and uranium, with some other metals.

A nonnitrogenous, crystalline body, present in small quantity in human fæces.

To look for (mentally); to look forward to, as to something that is believed to be about to happen or come; to have a previous apprehension of, whether of good or evil; to look for with some confidence; to anticipate; -- often followed by an infinitive, sometimes by a clause (with, or without, that); as I expect to rec…

hing objectionable; to render accessible to anything which may affect, especially detrimentally; to make liable; as, to expose one's self to the heat of the sun, or to cold, insult, danger, or ridicule; to expose an army to destruction or defeat. Expose thyself to feel what wretches feel. Shak.

r bare; openness to danger; accessibility to anything that may affect, especially detrimentally; as, exposure to observation, to cold to inconvenience. When we have our naked frailties hid, That suffer in exposure. Shak.