Definition of axis
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Axis (n.) Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon..
Lern More About Axis
Ordinate ::
Ordinate (n.) The distance of any point in a curve or a straight line, measured on a line called the axis of ordinates or on a line parallel to it, from another line called the axis of abscissas, on which the corresponding abscissa of the point is measured..
Myelencephalon ::
Myelencephalon (n.) The brain and spinal cord; the cerebro-spinal axis; the neuron. Sometimes abbreviated to myelencephal.
Treadmill ::
Treadmill (n.) A mill worked by persons treading upon steps on the periphery of a wide wheel having a horizontal axis. It is used principally as a means of prison discipline. Also, a mill worked by horses, dogs, etc., treading an endless belt..
Eccentricity ::
Eccentricity (n.) The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis.
Centripetal ::
Centripetal (a.) Having the radicle turned toward the axis of the fruit, as some embryos..
Subtartarean ::
Subtangent (n.) The part of the axis contained between the ordinate and tangent drawn to the same point in a curve.
Inflexed ::
Inflexed (a.) Bent or turned abruptly inwards, or toward the axis, as the petals of a flower..
Posterior ::
Posterior (a.) On the side next the axis of inflorescence; -- said of an axillary flower.
Quadrature ::
Quadrature (a.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas..
Carpophore ::
Carpophore (n.) A slender prolongation of the receptacle as an axis between the carpels, as in Geranium and many umbelliferous plants..
Radiata ::
Radiata (n. pl.) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere..
Balance Wheel ::
Balance wheel () A ratchet-shaped scape wheel, which in some watches is acted upon by the axis of the balance wheel proper (in those watches called a balance)..
Barker''s Mill ::
Barker's mill () A machine, invented in the 17th century, worked by a form of reaction wheel. The water flows into a vertical tube and gushes from apertures in hollow horizontal arms, causing the machine to revolve on its axis..
Neurokeratin ::
Neurokeratin (n.) 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..
Preaxial ::
Preaxial (a.) Situated in front of any transverse axis in the body of an animal; anterior; cephalic; esp., in front, or on the anterior, or cephalic (that is, radial or tibial) side of the axis of a limb..
Ladies'' Tresses ::
Ladies' tresses () A name given to several species of the orchidaceous genus Spiranthes, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair..
Trundlehead ::
Trundlehead (n.) The drumhead of a capstan; especially, the drumhead of the lower of two capstans on the sane axis..
Anteflexion ::
Anteflexion (n.) A displacement forward of an organ, esp. the uterus, in such manner that its axis is bent upon itself..
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