Search the Dictionary

one oblique intersection; -- said of that system of crystallization in which the vertical axis is inclined to one, but at right angles to the other, lateral axis. See Crystallization.

Having a monopodium or a single and continuous axis, as a birchen twig or a cornstalk.

A single and continuous vegetable axis; -- opposed to sympodium.

Arranged in a single row on one side of an axis, as the flowers in grasses of the tribe Chloridæ.

Having more than one axis; developing in more than a single line or plain; -- opposed to Ant: monoaxial.

The brain and spinal cord; the cerebro-spinal axis; the neuron. Sometimes abbreviated to myelencephal.

century is the nadir of the human mind in Europe. Hallam. Nadir of the sun (Astron.), the axis of the conical shadow projected by the earth. Crabb.

That portion of the axis which bears the nectocalyces in the Siphonophora.

dullated or nonmedullated. in both kinds the essential part is the translucent threadlike axis cylinder which is continuous the whole length of the fiber. -- Nerve stretching (Med.), the operation of stretching a nerve in order to remedy diseases such as tetanus, which are supposed to be influenced by the condition of…

aining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal. Neural arch (Anat.), the cartilaginous or bony arch on the dorsal side o…

A substance, resembling keratin, present in nerve tissue, as in the sheath of the axis cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin.

The brain and spinal cord; the cerebro-spinal axis; myelencephalon. B. G. Wilder.

The deep-seated parts of the vertebrate skeleton which are relation with the nervous axis and locomation. Owen.

f certain salts or other compounds. Contrasted with Ant: acid, and Ant: alkaline. Neutral axis, Neutral surface (Mech.), that line or plane, in a beam under transverse pressure, at which the fibers are neither stretched nor compressed, or where the longitudinal stress is zero. See Axis. -- Neutral equilibrium (Mech.),…

hich rays from the large speculum are received by a plane mirror placed diagonally in the axis, and near the open end of the tube, and thrown at right angles toward one side of the tube, where the image is formed and viewed through the eyeplace. -- Newtonian theory of light. See Note under Light.

A very small libratory motion of the earth's axis, by which its inclination to the plane of the ecliptic is constantly varying by a small amount.

id or spheroid (Geom.), a solid generated by the revolution of an ellipse about its minor axis; an oblatum. See Ellipsoid of revolution, under Ellipsoid.

An oblate spheroid; a figure described by the revolution of an ellipse about its minor axis. Cf. Oblongum.

ive. See Case, n. -- Oblique circle (Projection), a circle whose plane is oblique to the axis of the primitive plane. -- Oblique fire (Mil.), a fire the direction of which is not perpendicular to the line fired at. -- Oblique flank (Fort.), that part of the curtain whence the fire of the opposite bastion may be disc…

A prolate spheroid; a figure described by the revolution of an ellipse about its greater axis. Cf. Oblatum, and see Ellipsoid of revolution, under Ellipsoid.