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To occur, fall, or come between, points of time, or events; as, an instant intervened between the flash and the report; nothing intervened ( i. e., between the intention and the execution) to prevent the undertaking.

To poison; to drug. South.

A poisoning, as by a spirituous or a narcotic substance.

Situated below the point where a leaf joins the stem.

equation which expresses the relation which the length of a curve, measured from a given point of it, to a movable point, has to the angle which the tangent to the curve at the movable point makes with a fixed line. -- Intrinsic value. See the Note under Value, n.

n-1 x means the arc whose sine is x. Inverse figures (Geom.), two figures, such that each point of either figure is inverse to a corresponding point in the order figure. -- Inverse points (Geom.), two points lying on a line drawn from the center of a fixed circle or sphere, and so related that the product of their dis…

The relation which exists between three or more sets of points, a.a', b.b', c.c', so related to a point O on the line, that the product Oa.Oa' = Ob.Ob' = Oc.Oc' is constant. Sets of lines or surfaces possessing corresponding properties may be in involution.

To point or tip with iridium, as a gold pen.

mium. It is found in flattened metallic grains of extreme hardness, and is often used for pointing gold pens.

A poison that produces inflammation. Counter irritant. See under Counter. -- Pure irritant (Toxicology), a poison that produces inflammation without any corrosive action upon the tissues.

Not rotatory; passing from one point to another by a movement other than rotation; -- said of the movement of parts of a liquid or yielding mass. Sir W. Thomson.

Having equal entropy. Isentropic lines, lines which pass through points having equal entropy.

A line connecting the points on the surface of the earth where a certain temperature is found at the same depth.

ng the same color; connecting parts having the same color, as lines drawn through certain points in experiments on the chromatic effects of polarized light in crystals.

A line connecting points on the earth's surface having the same mean temperature in the coldest month of the year.

f moving a fleet from one formation to another, the direction usually being changed eight points (90º), by means of paths of equal length for each ship. It is prohibited in the United States navy.

A line or curved surface passing beneath the earth's surface through points having the same mean temperature.

Placed or standing alone; detached; separated from others. Isolated point of a curve. (Geom.) See Acnode.

Having equal density, as different regions of a medium; passing through points at which the density is equal; as, an isopycnic line or surface.

Of equal value. Isorropic line (in a diagram) (Geom.), the locus of all the points for which a specified function has a constant value. Newcomb.