Part 425

2. (Chem.) The smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule.

3. Anything extremely small; a particle; a whit.

There was not an atom of water. Sir J. Ross.

At"om, v. t. To reduce to atoms. [Obs.] Feltham.

{ A*tom"ic (&?;), A*tom"ic*al (&?;), } a. [Cf. F. atomique.] 1. Of or pertaining to atoms.

2. Extremely minute; tiny.

Atomic philosophy, or Doctrine of atoms, a system which, assuming that atoms are endued with gravity and motion, accounted thus for the origin and formation of all things. This philosophy was first broached by Leucippus, was developed by Democritus, and afterward improved by Epicurus, and hence is sometimes denominated the Epicurean philosophy. -- Atomic theory, or the Doctrine of definite proportions (Chem.), teaches that chemical combinations take place between the supposed ultimate particles or atoms of bodies, in some simple ratio, as of one to one, two to three, or some other, always expressible in whole numbers. -- Atomic weight (Chem.), the weight of the atom of an element as compared with the weight of the atom of hydrogen, taken as a standard.

A*tom"ic*al*ly, adv. In an atomic manner; in accordance with the atomic philosophy.

At`o*mi"cian (&?;), n. An atomist. [R.]

A*tom"i*cism (&?;), n. Atomism. [Obs.]

At`o*mic"i*ty (&?;), n. [Cf. F. atomicité.] (Chem.) Degree of atomic attraction; equivalence; valence; also (a later use) the number of atoms in an elementary molecule. See Valence.

At"om*ism (&?;), n. [Cf. F. atomisme.] The doctrine of atoms. See Atomic philosophy, under Atomic.

At"om*ist, n. [Cf. F. atomiste.] One who holds to the atomic philosophy or theory. Locke.

At`om*is"tic (&?;), a. Of or pertaining to atoms; relating to atomism. [R.]

It is the object of the mechanical atomistic philosophy to confound synthesis with synartesis. Coleridge.

At`om*i*za"tion, n. 1. The act of reducing to atoms, or very minute particles; or the state of being so reduced.

2. (Med.) The reduction of fluids into fine spray.

At"om*ize, v. t. To reduce to atoms, or to fine spray.

The liquids in the form of spray are said to be pulverized, nebulized, or atomized. Dunglison.

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At"om*i`zer (t"m*`zr), n. One who, or that which, atomizes; esp., an instrument for reducing a liquid to spray for disinfecting, cooling, or perfuming.

At`om*ol"o*gy (t`m*l"*j), n. [Atom + -logy.] The doctrine of atoms. Cudworth.

At"om*y (t"m*), n. An atom; a mite; a pigmy.

At"o*my (&?;), n. [For anatomy, taken as an atomy.] A skeleton. [Ludicrous] Shak.

A*ton"a*ble (&?;), a. Admitting an atonement; capable of being atoned for; expiable.

At one" (&?;). [OE. at on, atone, atoon, attone.] 1. In concord or friendship; in agreement (with each other); as, to be, bring, make, or set, at one, i. e., to be or bring in or to a state of agreement or reconciliation.

If gentil men, or othere of hir contree Were wrothe, she wolde bringen hem atoon. Chaucer.

2. Of the same opinion; agreed; as, on these points we are at one.