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To join, or come in contact with; esp., to come in contact with by approach from an opposite direction; to come upon or against, front to front, as distinguished from contact by following and overtaking.

y the changes of intensity in an electric current, occasioned by the variations in the contact resistance of conducting bodies, especially of imperfect conductors, under the action of acoustic vibrations.

movements of one whose hand the reader holds or with whom he is otherwise in muscular contact.

c oxide, a colorless poisous gas (NO) obtained by treating nitric acid with copper. On contact with the air or with oxygen, it becomes reddish brown from the formation of nitric dioxide or peroxide.

Not contagious; not catching; not communicable by contact. -- Non`con*ta"gious*ness, n.

A European bird (Nucifraga caryocatactes), allied to the magpie and crow. Its color is dark brown, spotted with white. It feeds on nuts, seeds, and insects.

The general signification of on is situation, motion, or condition with respect to contact or support beneath; as: --

To touch closely, so as to have a common curvature at the point of contact. See Osculation, 2.

The contact of one curve with another, when the number of consecutive points of the latter through which the former passes suffices for the complete determination of the former curve. Brande & C.

A curve whose contact with a given curve, at a given point, is of a higher order (or involves the equality of a greater number of successive differential coefficients of the ordinates of the curves taken at that point) than that of any other curve of the same kind.

The tendency in fluids to mix, or become equably diffused, when in contact. It was first observed between fluids of differing densities, and as taking place through a membrane or an intervening porous structure. The more rapid flow from the thinner to the thicker fluid was then called endosmose, and the opposite, slowe…

To separate or disunite; to cause to go apart; to remove from contact or contiguity; to sunder. The Lord do so to me, and more also, if aught but death part thee and me. Ruth i. 17. While he blessed them, he was parted from them, and carried up into heaven. Luke xxiv. 51. The narrow seas that part The French and Englis…

h which the former works, that the two lines will have a common velocity as in rolling contact; it usually cuts the teeth at about the middle of their height, and, in a circular gear, is a circle concentric with the axis of the gear; the line, or circle, on which the pitch of teeth is measured. -- Pitch of a roof (Arc…

A small, hard, elastic plate, as of ivory, bone, or rubber, placed in contact with body to receive the blow, in examination by mediate percussion. [Written also plexometer.]

The right line drawn through the two points of contact of the two tangents drawn from a given point to a given conic section. The given point is called the pole of the line. If the given point lies within the curve so that the two tangents become imaginary, there is still a real polar line which does not meet the curve…

each anther. -- Pollen tube, a slender tube which issues from the pollen grain on its contact with the stigma, which it penetrates, thus conveying, it is supposed, the fecundating matter of the grain to the ovule.

on which is derived from a driver through unyielding intermediate pieces, or by direct contact, and not through elastic connections, nor by means of friction, gravity, etc.; definite motion. -- Positive philosophy. See Positivism. -- Positive pole. (a) (Elec.) The pole of a battery or pile which yields positive or vi…

To maintain throughout; to keep intact; as, to preserve appearances; to preserve silence. To preserve game, to protect it from extermination.

not be included in either of the other two divisions. They manifest themselves in the contact of substances with the organs of taste, touch, and smell, or otherwise affect the living organism, as in the manner of medicines and poisons.

A substance, usually nitrogenous, which is liable to undergo decomposition when in contact with air and moisture at ordinary temperatures.