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A projecting part of a wheel or other moving piece so shaped as to give alternate or variable motion to another piece against which its acts.

ions are attended with the formation of an intermediate compound or compounds, so that by alternate composition and decomposition the agent is apparenty left unchanged; as, the catalysis of making ether from alcohol by means of sulphuric acid; or catalysis in the action of soluble ferments (as diastase, or ptyalin) on…

iversify with different qualities, color, scenes, or events; esp., to subject to frequent alternations of prosterity and adversity. Our minds are, as it were, checkered with truth and falsehood. Addison.

A board with sixty-four squares of alternate color, used for playing checkers or draughts.

Marked with alternate squares or checks of different color or material. Dancing in the checkered shade. Milton.

Work consisting of or showing checkers varied alternately as to colors or materials.

Anything made so as to form alternate squares lke those of a checkerboard.

Divided into small alternating squares of two tinctures; -- said of the field or of an armorial bearing. [Written also checquy, cheguy.]

The board used in the game of chess, having eight rows of alternate light and dark squares, eight in each row. See Checkerboard.

A coil of small resistance and large inductance, used in an alternating-current circuit to impede or throttle the current, or to change its phase; --called also reactance coil or reactor, these terms being now preferred in engineering usage.

A form of monochasium in which the lateral branches arise alternately on opposite sides of the false axis; -- called also scorpioid cyme. --Cin*cin"nal (#), a.

of an electrical current; an attachment to certain electrical machines, by means of which alternating currents are made to be continuous or to have the same direction.

Divided into squares of alternate tinctures in a single row; -- said of any bearing; or, in the case of a bearing having curved lines, divided into patches of alternate colors following the curve. If there are two rows it is called counter-compony.

Tending to conciliate; pacific; mollifying; propitiating. The only alternative, therefore, was to have recourse to the conciliatory policy. Prescott.

To form or shape into wrinkles or folds, or alternate ridges and grooves, as by drawing, contraction, pressure, bending, or otherwise; to wrinkle; to purse up; as, to corrugate plates of iron; to corrugate the forehead. Corrugated iron, sheet iron bent into a series of alternate ridges and grooves in parallel lines, gi…

The act corrugating; contraction into wrinkles or alternate ridges and grooves.

hen divided fesswise, so that each vertical piece is cut into two, having the colors used alternately or counterchanged. Thus the escutcheon in the illustration may also be blazoned paly of six per fess counterchanged argent and azure.

A racing stroke, in which the swimmer, lying flat on the water with face submerged, takes alternate overhand arm strokes while moving his legs up and down alternately from the knee.

ractices dancing. The merry dancers, beams of the northern lights when they rise and fall alternately without any considerable change of length. See Aurora borealis, under Aurora.

Consisting of two rising and two falling clauses, placed in alternate opposition to each other; as, a decussated period.