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Instantaneous center of rotation (Kinematics), in a plane or in a plane figure which has motions both of translation and of rotation in the plane, is the point which for the instant is at rest. -- Instantaneous axis of rotation (Kinematics), in a body which has motions both of translation and rotation, is a line, whi…

ed without reasoning, deliberation, instruction, or experience; spontaneous. "Instinctive motion." Milton. "Instinctive dread." Cowper. With taste instinctive give Each grace appropriate. Mason. Have we had instinctive intimations of the death of some absent friends Bp. Hall.

direct; to command; as, the judge instructs the jury. She, being before instructed of her mother, said, Give me here John Baptist's head in a charger. Matt. xiv. 8. Take her in; instruct her what she has to do. Shak.

against an established government; insubordinate; rebellious. "The insurgent provinces." Motley.

Lacking nothing of completeness; complete; perfect; uninjured; whole; entire. A local motion keepeth bodies integral. Bacon.

Moral soundness; honesty; freedom from corrupting influence or motive; -- used especially with reference to the fulfillment of contracts, the discharge of agencies, trusts, and the like; uprightness; rectitude. The moral grandeur of independent integrity is the sublimest thing in nature. Buckminster. Their sober zeal,…

Existing between royal courts. [R.] "Interaulic politics." Motley.

ever. -- Intermittent gearing (Mach.), gearing which receives, or produces, intermittent motion. -- Intermittent springs, springs which flow at intervals, not apparently dependent upon rain or drought. They probably owe their intermittent action to their being connected with natural reservoirs in hills or mountains b…

an Internal- combustion engine) in which the heat or pressure energy necessary to produce motion is developed in the engine cylinder, as by the explosion of a gas, and not in a separate chamber, as in a steam- engine boiler. The gas used may be a fixed gas, or one derived from alcohol, ether, gasoline (petrol), naphtha…

tually destructive. Internecine quarrels, horrible tumults, stain the streets with blood. Motley.

To renew; to carry on with intermission. [Obs.] Motion . . . partly continued and unintermitted, . . . partly interpolated and interrupted. Sir M. Hale.

or hinder by breaking in upon the course or progress of; to interfere with the current or motion of; to cause a temporary cessation of; as, to interrupt the remarks speaking. Do not interrupt me in my course. Shak.

Obstruction caused by breaking in upon course, current, progress, or motion; stop; hindrance; as, the author has met with many interruptions in the execution of his work; the speaker or the argument proceeds without interruption.

passing from the outside of a thing to its interior parts; -- following verbs expressing motion; as, come into the house; go into the church; one stream falls or runs into another; water enters into the fine vessels of plants.

Overexcited, as with joy or grief. Alas, good mother, be not intoxicate for me; I am well enough. Chapman.

fected; as an invective against tyranny. The world will be able to judge of his [Junius'] motives for writing such famous invectives. Sir W. Draper.

A large and handsome American moth (Hyperchiria Io), having a large, bright-colored spot on each hind wing, resembling the spots on the tail of a peacock. The larva is covered with prickly hairs, which sting like nettles.

e quality or state of being iridescent; a prismatic play of color; as, the iridescence of mother-of-pearl.

ar figure; an irregular verse; an irregular physician; an irregular proceeding; irregular motion; irregular conduct, etc. Cf. Regular. Mazes intricate, Eccentric, intervolved, yet regular Then most when most irregular they seem. Milton. Leading the men of Herefordshire to fight Against the irregular and wild Glendower.…

Destitute of religion; not controlled by religious motives or principles; ungodly. Cf. Impiou. Shame and reproach are generally the portion of the impious and irreligious. South.