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A colorless, crystalline hydrocarbon, C20H14, obtained from naphthylene, and consisting of a doubled naphthylene radical.

genus of large extinct Devonian ganoid fishes. In some parts of Ohio remains of the Dinichthys are abundant, indicating animals twenty feet in length.

Lack of sympathy; want of passion; apathy. [R.] Many discrepancies and some dispathies between us. Southey.

Lack of sympathy; want of interest; indifference. [R.]

A kind of lyric poetry in honor of Bacchus, usually sung by a band of revelers to a flute accompaniment; hence, in general, a poem written in a wild irregular strain. Bentley.

Pertaining to, or resembling, a dithyramb; wild and boisterous. "Dithyrambic sallies." Longfellow. -- n.

See Dithyramb.

Droughty.

Consisting of, or resembling, earth; terrene; earthlike; as, earthy matter. How pale she looks, And of an earthy cold! Shak. All over earthy, like a piece of earth. Tennyson.

A morbid condition characterized by automatic and purposeless repetition of words or imitation of actions.

A cutaneous eruption, consisting of large, round pustules, upon an indurated and inflamed base. Dunglison.

The treatment of disease by electricity.

Allopathy; -- a term used by followers of Hahnemann, or homeopathists.

y disease or symptoms of disease referable to disorders of the brain; as, lead encephalopathy, the cerebral symptoms attending chronic lead poisoning.

Disease of the intestines.

Pertaining to, or of the form of, an enthymeme.

An argument consisting of only two propositions, an antecedent and consequent deduced from it; a syllogism with one premise omitted; as, We are dependent; therefore we should be humble. Here the major proposition is suppressed. The complete syllogism would be, Dependent creatures should be humble; we are dependent crea…

raffin series, forming the essential radical of ethane, and of common alcohol and ether. Ethyl aldehyde. (Chem.) See Aldehyde.

ith an ammoniacal odor. It is a strong base, and is a derivative of ammonia. Called also ethyl carbamine, and amido ethane.

A compound derived from ethyl alcohol by the replacement of the hydroxyl hydrogen, after the manner of a hydrate; an ethyl alcoholate; as, potassium ethylate, C2H5.O.K.