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A nervine agent.

cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin.

Any toxic agent whose action is mainly directed to the great nerve centers.

ate of silver, a white crystalline salt (AgNO3), used in photography and as a cauterizing agent; -- called also lunar caustic.

An agent employed in nitrification.

rrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell d…

lities whose effects only were observed, but the nature and relations of whose productive agencies were undetermined; -- so called by the schoolmen. -- Occult sciences, those sciences of the Middle Ages which related to the supposed action or influence of occult qualities, or supernatural powers, as alchemy, magic, ne…

henbach and others, to produce the phenomena of mesmerism, and to be developed by various agencies, as by magnets, heat, light, chemical or vital action, etc.; -- called also odyle or the odylic force. [Archaic] That od force of German Reichenbach Which still, from female finger tips, burnt blue. Mrs. Browning.…

Denoting the agent, or person by whom, or thing by which, anything is, or is done; by. And told to her of [by] some. Chaucer. He taught in their synagogues, being glorified of all. Luke iv. 15. [Jesus] being forty days tempted of the devil. Luke iv. 1, 2.

The act or process of operating; agency; the exertion of power, physical, mechanical, or moral. The pain and sickness caused by manna are the effects of its operation on the stomach. Locke. Speculative painting, without the assistance of manual operation, can never attain to perfection. Dryden.

Serpent worship or the use of serpents as magical agencies.

A noun suffix denoting an agent or doer; as in auditor, one who hears; donor, one who gives; obligor, elevator. It is correlative to -ee. In general -or is appended to words of Latin, and -er to those of English, origin. See -er.

salts are deposited to form bone; -- called also ostein. Chemically it is the same as collagen.

allowance made for, equipment, as by the government of the United States to a diplomatic agent going abroad.

Outlay; expenditure. [R.] A mere outspend of savageness. I. Taylor.

To combine with oxygen, or subject to the action of oxygen, or of an oxidizing agent. Specifically:

An agent employed in oxidation, or which facilitates or brings about combination with oxygen; as, nitric acid, chlorine, bromine, etc., are strong oxidizers.

An oxytocic medicine or agent.

An apparatus or agent for the production or application of ozone.

That which palliates; a palliative agent. Sir W. Scott.