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A Linnæan class of plants whose stamens are united into two bodies or bundles by their filaments.

Of or pertaining to the class Diadelphia; having the stamens united into two bodies by their filaments (said of a plant or flower); grouped into two bundles or sets by coalescence of the filaments (said of stamens).

The separation or resolution of one syllable into two; -- the opposite of synæresis.

tial diagnosis (Med.), the determination of the distinguishing characteristics as between two similar diseases or conditions.

Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides. Diagonal bond (Masonry), herringbone work. See Herringbone, a. -- Diagonal built (Shipbuilding), built by forming the outer skin of two layers of planking, making…

A volatile, pungent, liquid hydrocarbon, C6H10, consisting of two allyl radicals, and belonging to the acetylene series.

An imaginary speech or discussion between two or more; dialogue. Fulke.

A conversation between two or more persons; particularly, a formal conservation in theatrical performances or in scholastic exercises.

llel chords drawn in a curve or surface. -- Diametral planes (Crystal.), planes in which two of the axes lie.

Any compound containing two amido groups united with one or more acid or negative radicals, -- as distinguished from a diamine. Cf. Amido acid, under Amido, and Acid amide, under Amide.

A compound containing two amido groups united with one or more basic or positive radicals, -- as contrasted with a diamide.

A geometrical figure, consisting of four equal straight lines, and having two of the interior angles acute and two obtuse; a rhombus; a lozenge.

A Linnæan class of plants having two stamens.

Of or pertaining to the class Diandria; having two stamens.

A calcareous plate which divides the cavity of certain shells into two parts.

A form of government in which the supreme power is vested in two persons.

applied to the nucleus of a cell, when, during cell division, the loops of the nuclear network separate into two groups, preparatory to the formation of two daughter nuclei. See Karyokinesis.

Containing two atoms.

Diatonic scale (Mus.), a scale consisting of eight sounds with seven intervals, of which two are semitones and five are whole tones; a modern major or minor scale, as distinguished from the chromatic scale.

Disjoining two fourths; as, the diazeutic tone, which, like that from F to G in modern music, lay between two fourths, and, being joined to either, made a fifth. [Obs.]