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Of or pertaining to nebulæ; of the nature of, or resembling, a nebula. Nebular hypothesis, an hypothesis to explain the process of formation of the stars and planets, presented in various forms by Kant, Herschel, Laplace, and others. As formed by Laplace, it supposed the matter of the solar system to have existed origi…

A blackish fish (Hypoplectrus nigricans), of the Sea-bass family. It is a native of the West Indies and Florida.

Any form of belief in mental healing other than (1) Christian Science and (2) hypnotism or psychotherapy. Its central principle is affirmative thought, or suggestion, employed with the conviction that man produces changes in his health, his finances, and his life by the adoption of a favorable mental attitude. AS a the…

A hypothetical nitro derivative of quinol or hydroquinone, not known in the free state, but forming a well defined series of derivatives.

s a relatively lower valence as contrasted with nitric compounds. Nitrous acid (Chem.), a hypothetical acid of nitrogen HNO2, not known in the free state, but forming a well known series of salts, viz., the nitrites. -- Nitrous oxide. See Laughing gas.

Knotted. Nodated hyperbola (Geom.), a certain curve of the third order having two branches which cross each other, forming a node.

ular crystalline rock consisting essentially of a triclinic feldspar (as labradorite) and hypersthene.

Denoting certain hypothetical compounds, as acids from which the real acids are obtained by dehydration; thus, normal sulphuric acid and normal nitric acid are respectively S(OH)6, and N(OH)5.

A hypothetical radical (C8H15O), regarded as the essential residue of octoic acid.

A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol.

n account of its rarity. -- Orange grass (Bot.), an inconspicuous annual American plant (Hypericum Sarothra), having minute, deep yellow flowers. -- Orange oil (Chem.), an oily, terpenelike substance obtained from orange rind, and distinct from neroli oil, which is obtained from the flowers. -- Orange pekoe, a kind…

pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.

Excessively righteous; -- usually implying hypocrisy.

An hypothesis advanced by Darwin in explanation of heredity.

Of or pertaining to panspermy; as, the panspermic hypothesis.

A tumor formed by hypertrophy of the papillæ of the skin or mucous membrane, as a corn or a wart. Quain.

ally conical, elevation of the cuticle, produced by congestion, accumulated secretion, or hypertrophy of tissue; a papule. Quain.

Specifically (Conic Sections), in the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate.

Part or half; in part; partially. Shak. [Sometimes hyphened with the word following.] The worthy dame was parcel-blind. Sir W. Scott. One that . . . was parcel-bearded [partially bearded]. Tennyson. Parcel poet, a half poet; a poor poet. [Obs.] B. Jonson.

differentials, differential coefficients, differentiation etc., of the function, upon the hypothesis that some of the variables are for the time constant. -- Partial fractions (Alg.), fractions whose sum equals a given fraction. -- Partial tones (Music), the simple tones which in combination form an ordinary tone; th…