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A glucoside obtained from the Æsculus hippocastanum, or horse- chestnut, and characterized by its fine blue fluorescent solutions. [Written also æsculin.]

the pseudonym "Dr. Esperanto" in publishing his first pamphlet regarding it in 1887. The vocabulary is very largely based upon words common to the chief European languages, and sounds peculiar to any one language are eliminated. The spelling is phonetic, and the accent (stress) is always on the penult. -- Es`pe*ran"tis…

issaries, engineers, ordnance officers, paymasters, physicians, signal officers, judge advocates; also, the noncommissioned assistants of the above officers.

A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.

A trivalent hydrocarbon radical, CH3.C.

Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether. Complex ether, Mixed ether (Chem.), an oxide of two different radicals in the same molecule; as, ethyl methyl ether, C2H5.O.CH3. -- Compound ether (Chem.), an ethereal salt or a salt of some hydrocarbon as the base; an ester. -- Ether engine (M…

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.

An oily hydrocarbon regarded as a polymeric variety of ethylene, produced with etherin.

A monatomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether. Ethyl aldehyde. (Chem.) See Aldehyde.

A colorless, gaseous hydrocarbon, C2H4, forming an important ingredient of illuminating gas, and also obtained by the action of concentrated sulphuric acid in alcohol. It is an unsaturated compound and combines directly with chlorine and bromine to form oily liquids (Dutch liquid), -- hence called olefiant gas. Called…

An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.

A colorless, aromatic, liquid hydrocarbon, C10H12O2 resembling the phenols, and hence also called eugenic acid. It is found in the oils of pimento and cloves.

One who advocates euhemerism.

table and animal substances; -- specifically, an oil consisting largely of the higher hydrocarbons of the paraffin series. [Written also eupion.]

Luxation; the dislocation of a joint. Bailey.

y, or of a scepter for a sword, and the like; also, the act of giving and receiving reciprocally; as, an exchange of civilities or views.

Practicing; professional. [Obs.] "Every exercent advocate." Ayliffe.

A prefix signifying out of, outside; as in exocarp, exogen, exoskeleton.

in language; open to the understanding; clear; not obscure or ambiguous; express; unequivocal; as, an explicit declaration. The language of the charter was too explicit to admit of a doubt. Bancroft.

One who favors or advocates extension.