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lumination between the umbra, or perfect shadow, on all sides, and the full light. Sir I. Newton.

ne body against another; forcible collision, esp. such as gives a sound or report. Sir I. Newton.

Watery. [Obs.] "Aqueous and phlegmatic." Sir I. Newton.

A name given to apples of several different kinds, as Newtown pippin, summer pippin, fall pippin, golden pippin. We will eat a last year's pippin. Shak. Normandy pippins, sun-dried apples for winter use.

by friction; a gloss or luster. Another prism of clearer glass and better polish. Sir I. Newton.

Smooth; polished. [Obs.] Rays of light falling on a polite surface. Sir I. Newton.

point considered; -- also called potential function, or force function. It is called also Newtonian potential when the force is directed to a fixed center and is inversely as the square of the distance from the center.

as, love predominated in her heart. [Certain] rays may predominate over the rest. Sir. I. Newton.

The act of pressing; pressure. Sir I. Newton.

by the point; to attach or hang by puncturing; as, to prick a knife into a board. Sir I. Newton. The cooks prick it [a slice] on a prong of iron. Sandys.

First principles; fundamental beginnings; elements; as. Newton's Principia.

egree; adapted relatively; as, all parts of the building are proportionally large. Sir I. Newton.

To tremble; to vibrate; to shake. Sir I. Newton.

with proposing only some queries, in order to a . . . search to be made by others. Sir I. Newton.

ter is nineteen times lighter, and by consequence nineteen times rarer, than gold. Sir I. Newton.

actions of two bodies upon each other are always equal and in opposite directions. Sir I. Newton (3d Law of Motion).

y hard, or so soft as to be void of elasticity, will not rebound from one another. Sir I. Newton.

ity or capability of being reflexible; as, the reflexibility of the rays of light. Sir I. Newton.

action out of the rarer medium into the denser, is made towards the perpendicular. Sir I. Newton.

those their colors are mixed again they reproduce the same white light as before. Sir I. Newton.