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Pertaining to, or designating, a nitrogenous acid which is obtained by the oxidation of uric acid, as a white crystalline substance (C3N2H2O3); -- also called oxalyl urea.

A portion of the mesoblast (of peripheral origin) of the developing embryo, the cells of which are especially concerned in forming the first blood and blood vessels. C. S. Minot.

Of or pertaining to the parablast; as, the parablastic cells.

which might really occur in life or nature, by means of which a moral is drawn; as, the parables of Christ. Chaucer. Declare unto us the parable of the tares. Matt. xiii. 36.

e of the conic sections formed by the intersection of the surface of a cone with a plane parallel to one of its sides. It is a curve, any point of which is equally distant from a fixed point, called the focus, and a fixed straight line, called the directrix. See Focus.

Similitude; comparison.

Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction.

By way of parable; in a parabolic manner.

Resembling a parabola in form.

The division of the terms of an equation by a known quantity that is involved in the first term. [Obs.]

A narrator of parables.

The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.

Of, pertaining to, or resembling, a paraboloid.

One of the branches of an ectobronchium or entobronchium.

Of, pertaining to, or in conformity with, the practice of Paracelsus, a Swiss physician of the 15th century. Ferrand.

A Paracelsian.

The perforation of a cavity of the body with a trocar, aspirator, or other suitable instrument, for the evacuation of effused fluid, pus, or gas; tapping.

Deviating from circularity; changing the distance from a center. Paracentric curve (Math.), a curve having the property that, when its plane is placed vertically, a body descending along it, by the force of gravity, will approach to, or recede from, a fixed point or center, by equal distances in equal times; -- called…

A parachordal cartilage.

An error in chronology, by which the date of an event is set later than the time of its occurrence. [R.]