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Applied to a case expressing means or agency; as, the instrumental case. This is found in Sanskrit as a separate case, but in Greek it was merged into the dative, and in Latin into the ablative. In Old English it was a separate case, but has disappeared, leaving only a few anomalous forms. Instrumental errors, those er…

tion of being instrumental; that which is instrumental; anything used as a means; medium; agency. The instrumentality of faith in justification. Bp. Burnet. The discovery of gunpowder developed the science of attack and defense in a new instrumentality. J. H. Newman.

By means of an instrument or agency; as means to an end. South. They will argue that the end being essentially beneficial, the means become instrumentally so. Burke.

Usefulness or agency, as means to an end; instrumentality. [R.] Hammond.

act of using or adapting as an instrument; a series or combination of instruments; means; agency. Otherwise we have no sufficient instrumentation for our human use or handling of so great a fact. H. Bushnell.

the time specified. -- Fire insurance. See under Fire. -- Insurance broker, a broker or agent who effects insurance. -- Insurance company, a company or corporation whose business it is to insure against loss, damage, or death. -- Insurance policy, a certificate of insurance; the document containing the contract mad…

e relatively simple and permanent. It is supposed to alternate with differentiation as an agent in development.

tive; -- 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, integrity. and worth. Cowper.

One who or that which intensifies or strengthens; in photography, an agent used to intensify the lights or shadows of a picture.

To act upon each other; as, two agents mutually interact. Emerson. Tyndall.

One who, or that which, is intermediate; an interagent; a go- between.

An intervening agent or instrument. Cowper.

who, or that which, interposes or intervenes; an obstacle or interruption; a mediator or agent between parties. Shak.

That which intoxicates; an intoxicating agent; as, alcohol, opium, and laughing gas are intoxicants.

cifically (Med.), the rubbing of ointments into the pores of the skin, by which medicinal agents contained in them, such as mercury, iodide of potash, etc., are absorbed.

resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. Symbol Ir. Atomic weight 192.5.

hite metal. It is easily oxidized (rusted) by moisture, and is attacked by many corrosive agents. Symbol Fe (Latin Ferrum). Atomic weight 55.9. Specific gravity, pure iron, 7.86; cast iron, 7.1. In magnetic properties, it is superior to all other substances.

Any agent by which irritation is produced; as, a chemical irritant; a mechanical or electrical irritant.

Serving to excite or irritate; irritating; as, an irritative agent.

A noun suffix denoting an agent, or doer, one who practices, a believer in; as, theorist, one who theorizes; socialist, one who holds to socialism; sensualist, one given to sensuality.