Part 202

2. (Metal Work) Act or process of pressing or drawing with dies or presses; also, the product of such work.

3. (Cabinetmaking) Work consisting of a series of cross-grained veneers united by glue, heat, and pressure.

4. Pottery produced by pressing clay into molds.

5. Usually Press work. The work of a press agent. [Chiefly Theat. Cant]

Prime, a. (Math.) (a) Divisible by no number except itself or unity; as, 7 is a prime number. (b) Having no common factor; -- used with to; as, 12 is prime to 25.

Prim"rose` League. (Eng. Politics) A league of both sexes among the Conservatives, founded in 1883. So called because primrose was (erroneously, it is said) taken to be the favorite flower of the Conservative statesman Benjamin Disraeli, Earl of Beaconsfield.

Print"ing in. (Photog.) A process by which cloud effects or other features not in the original negative are introduced into a photograph. Portions, such as the sky, are covered while printing and the blank space thus reserved is filled in by printing from another negative.

Printing out. (Photog.) A method of printing, in which the image is fully brought out by the direct actinic action of light without subsequent development by means of chemicals.

Pri"or (?), a. First, precedent, or superior in the order of cognition, reason or generality, origin, development, rank, etc.

Prism glass. Glass with one side smooth and the other side formed into sharp-edged ridges so as to reflect the light that passes through, used at windows to throw the light into the interior.

||Pri*vat"do*cent` (?), n.; G. pl. -docenten (#). [Also Privatdozent.] [G.; privat private + docent teacher. See Docent.] In the universities of Germany and some other European countries, a licensed teacher or lecturer having no share in the university government and dependent upon fees for remuneration.

Proc"ess plate. (a) A plate prepared by a mechanical process, esp. a photomechanical process. (b) A very slow photographic plate, giving good contrasts between high lights and shadows, used esp. for making lantern slides.

Prod"uce race. (Horse Racing) A race to be run by the produce of horses named or described at the time of entry.

Pro*duc"er's goods (?). (Polit. Econ.) Goods that satisfy wants only indirectly as factors in the production of other goods, such as tools and raw material; -- called also instrumental goods, auxiliary goods, intermediate goods, or goods of the second and higher orders, and disting. from consumers' goods.

Producer's surplus. (Polit. Econ.) Any profit above the normal rate of interest and wages accruing to a producer on account of some monopoly (temporary or permanent) of the means or materials of production; -- called also Producer's rent.

Pro*gress"ive, a. (U. S. Politics) Of or pertaining to the Progressive party.

Progressive party. (U. S. Politics) The political party formed, chiefly out of the Republican party, by the adherents of Theodore Roosevelt in the presidential campaign of 1912. The name Progressive party was chosen at the meeting held on Aug. 7, 1912, when the candidates were nominated and the platform adopted. Among the chief articles in the platform are those demanding direct primaries, preferential primaries for presidential nominations, direct election of United States senators, women's suffrage, and recall of judicial decisions in certain cases.

Pro*jec"tor, n. An optical instrument for projecting a picture upon a screen, as by a magic lantern or by an instrument for projecting (by reflection instead of transmission of light) a picture of an opaque object, as photographs, picture post-cards, insects, etc., in the colors of the object itself. In this latter form the projection is accomplished by means of a combination of lenses with a prism and a mirror or reflector. Specific instruments have been called by different names, such as radiopticon, mirrorscope, balopticon, etc.

||Pro"sit (?), interj. [L., 3d pers. sing. subj. present of prodesse to do good; pro for + esse to be.] Lit., may it do (you) good; -- a salutation used in well wishing, esp. among Germans, as in drinking healths.

Pro"te*id, n. -- Defensive proteid (Physiol. Chem.), one of a class of proteid substances, present in some animal tissues and fluids, that make the body immune to certain infectious diseases by destroying or rendering inactive the toxic products of bacterial growth.

Pro"te*in, n. (Physiol. Chem.) In chemical analysis, the total nitrogenous material in vegetable or animal substances, obtained by multiplying the total nitrogen found by a factor, usually 6.25, assuming most proteids to contain approximately 16 per cent of nitrogen.

Pro"te*ose` (?), n. [Proteid + -ose.] (Physiol. Chem.) One of a class of soluble products formed in the digestion of proteids with gastric and pancreatic juice, and also by the hydrolytic action of boiling dilute acids on proteids. Proteoses are divided into the two groups, the primary and secondary proteoses.

Pro`to*met"als (?), n. pl. A finer form of metals, indicated by enhanced lines in their spark spectra (which are also observed in the spectra of some stars), obtained at the highest available laboratory temperatures (Lockyer); as protocalcium, protochromium, protocopper, protonickel, protosilicon, protostrontium, prototitanium, protovanadium. -- Pro`to*me*tal"ic (#), a.

Prov"e*nance (?), n. [F., fr. provenir to originate, to come forth, L. provenire. Cf. Provenience.] Origin; source; provenience.

Their age attested by their provenance and associations.

A. H. Keane.

Pro*ve"ni*ence (?), n. [L. proveniens, -entis, p.pr. of provenire to come forth; pro forth + venire to come.] Origin; source; place where found or produced; provenance; -- used esp. in the fine arts and in archæology; as, the provenience of a patera.

Pro*ve"ni*ent (?), a. [L. proveniens, p.pr.] Forthcoming; issuing.