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Meeting and intersecting, as lines; not parallel; -- opposed to parallel. [Obs.] Ash.

Any right line passing through the center of a figure or body, as a circle, conic section, sphere, cube, etc., and terminated by the opposite boundaries; a straight line which bisects a system of parallel chords drawn in a curve.

ter; diametrical. Diametral curve, Diametral surface (Geom.), any line or surface which bisects a system of parallel chords drawn in a curve or surface. -- Diametral planes (Crystal.), planes in which two of the axes lie.

To cut into two parts; to part into two divisions; to divide into pairs; to bisect. [R.] The apostolical benediction dichotomizes all good things into grace and peace. Bp. Hall.

That phase of the moon in which it appears bisected, or shows only half its disk, as at the quadratures.

or two phases differing in color, independently of age or sex, as in certain birds and insects.

Having two of the intersections between the three axes oblique. See Crystallization.

ummit of a crystal. Dihedral angle, the angular space contained between planes which intersect. It is measured by the angle made by any two lines at right angles to the two planes.

An insectivorous plant. See Venus's flytrap.

An extensive order of insects having only two functional wings and two balancers, as the house fly, mosquito, etc. They have a suctorial proboscis, often including two pairs of sharp organs (mandibles and maxillæ) with which they pierce the skin of animals. They undergo a complete metamorphosis, their larvæ (called mag…

An insect of the order Diptera.

Having two wings, as certain insects; belonging to the order Diptera.

A straight line so situated with respect to a conic section that the distance of any point of the curve from it has a constant ratio to the distance of the same point from the focus.

Not continuous; interrupted; broken off. A path that is zigzag, discontinuous, and intersected at every turn by human negligence. De Quincey.

cially to the eagles and hawks among raptorial birds, and to butterflies (Diurna) among insects. Diurnal aberration (Anat.), the aberration of light arising from the effect of the earth's rotation upon the apparent direction of motion of light. -- Diurnal arc, the arc described by the sun during the daytime or while a…

Different in kind or species; diverse. [Obs.] Every sect of them hath a divers posture. Bacon. Thou shalt not sow thy vineyard with divers seeds. Deut. xxii. 9.

The portion separated by the divining of a mass or body; a distinct segment or section. Communities and divisions of men. Addison.

The aquatic larva of a large neuropterous insect (Corydalus cornutus), used as bait in angling. See Hellgamite.

val stores, materials, and all conveniences for the construction and repair of ships. -- Sectional dock, a form of floating dock made in separate sections or caissons. -- Slip dock, a dock having a sloping floor that extends from deep water to above high-water mark, and upon which is a railway on which runs a cradle…

ch is taught; what is held, put forth as true, and supported by a teacher, a school, or a sect; a principle or position, or the body of principles, in any branch of knowledge; any tenet or dogma; a principle of faith; as, the doctrine of atoms; the doctrine of chances. "The doctrine of gravitation." I. Watts. Articles…