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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.

A secondary or inner corolla; a corona, as of the Narcissus.

A secondary spiral in phyllotaxy, as one of the evident spirals in a pine cone.

he salivary glands in man, and its duct opens into the interior of the mouth opposite the second molar of the upper jaw.

One of the second pair of mouth organs of arachnids. In some they are leglike, but in others, as the scorpion, they terminate in a claw.

of the Jews; -- so called because celebrated on the fiftieth day (seven weeks) after the second day of the Passover (which fell on the sixteenth of the Jewish month Nisan); -- hence called, also, the Feast of Weeks. At this festival an offering of the first fruits of the harvest was made. By the Jews it was generally…

us to the phosphonic acids, but containing two hydrocarbon radicals, and derived from the secondary phosphines by oxidation.

s order who are the regular clerks of the Scuole Pie (religious schools), an institute of secondary education, founded at Rome in the last years of the 16th century. Addis & Arnold.

a representation in colors. By extension, a figure; a model. Pictures and shapes are but secondary objects. Bacon. The young king's picture . . . in virgin wax. Howell.

ose trees which have the primary leaves of the branchlets reduced to mere scales, and the secondary ones (pine needles) acicular, and usually in fascicles of two to seven. See Pine.

A stalk or shoot of sugar cane of the first growth from the cutting. The growth of the second and following years is of inferior quality, and is called rattoon.

repair by which the process of healing is effected. -- Plastic foods. (Physiol.) See the second Note under Food. -- Plastic force. (Physiol.) See under Force. -- Plastic operation, an operation in plastic surgery. -- Plastic surgery, that branch of surgery which is concerned with the repair or restoration of lost,…

With all small arms, the second point in which the natural line of sight, when horizontal, cuts the trajectory.

but in parthogenetic ova only one. The first polar body formed is usually larger than the second one, and often divides into two after its separation from the ovum. Each of the polar bodies removes maternal chromatin from the ovum to make room for the chromatin of the fertilizing spermatozoön; but their functions are n…

A fixed star of the second magnitude, in the constellation Gemini. Cf. 3d Castor.

ith a quaver followed by a crotchet, and closing on the beat after a strong accent on the second beat; also, a dance adapted to such music; a polacca.

t state or condition of the pulse in which the pulse curve, or sphygmogram, shows several secondary crests or elevations; -- contrasted with monocrotism and dicrotism.

being the power obtained from an expenditure of one hundred kilogram-meters of energy per second. One poncelet equals g watts, when g is the value of the acceleration of gravity in centimeters.

A second or subsequent, at the customhouse, of goods which had been omitted by mistake.

A unit of force based upon the pound, foot, and second, being the force which, acting on a pound avoirdupois for one second, causes it to acquire by the of that time a velocity of one foot per second. It is about equal to the weight of half an ounce, and is 13,825 dynes.