Chapter 51

Zi*moc"ca (?), n. A sponge (Euspongia zimocca) of flat form and fine quality, from the Adriatic, about the Greek islands, and the coast of Barbary.

Zin"co*graph (?), n. A zinc plate prepared for printing by zincography; also, a print from such a plate.

Zi"on*ism (?), n. [Zion + - ism.] Among the Jews, a theory, plan, or movement for colonizing their own race in Palestine, the land of Zion, or, if that is impracticable, elsewhere, either for religious or nationalizing purposes; -- called also Zion movement. -- Zi"on*ist, n. -- Zi`on*is"tic (#), a.

Zip (?), n. [Imitative.] A hissing or sibilant sound such as that made by a flying bullet.

Zip, v. i. To make, or move with, such a sound.

Zir"con light. (Physics) A light, similar to the calcium light, produced by incandescent zirconia.

||Zi"zith (?), n. pl. [Heb. tstsith.] The tassels of twisted cords or threads on the corners of the upper garment worn by strict Jews. The Hebrew for this word is translated in both the Authorized and Revised Versions (Deut. xxii. 12) by the word "fringes."

Zo"ism (?), n. [Gr. zwh` life + -ism.] 1. Reverence for animal life or belief in animal powers and influences, as among savages.

2. (Biol.) A doctrine, now discarded, that the phenomena of life are due to a peculiar vital principle; the theory of vital force.

Zo`la*esque" (?), a. In the style of Zola (see Zolaism).

Zo"la*ism (?), n. The literary theories and practices of the French novelist Emile Zola (1840-1902); naturalism, esp. in a derogatory sense. -- Zo"la*ist, n. -- Zo`la*is"tic (#), a. -- Zo"la*ize (#), v.

Zöll"ner's lines` (?). [So called after Friedrich Zöllner, a German physicist.] Parallel lines that are made to appear convergent or divergent by means of oblique intersections.

Zone, n. 1. (Biogeography) An area or part of a region characterized by uniform or similar animal and plant life; a life zone; as, Littoral zone, Austral zone, etc. The zones, or life zones, commonly recognized for North America are Arctic, Hudsonian, Canadian, Transition, Upper Austral, Lower Austral, and Tropical.

2. (Cryst.) A series of faces whose intersection lines with each other are parallel.

3. (Railroad Econ.) (a) The aggregate of stations, in whatsoever direction or on whatsoever line of railroad, situated between certain maximum and minimum limits from a point at which a shipment of traffic originates. (b) Any circular or ring-shaped area within which the street-car companies make no differences of fare.

4. In the United States parcel-post system, any of the areas about any point of shipment for which but one rate of postage is charged for a parcel post shipment from that point. The rate increases from within outwards. The first zone includes the unit of area "(a quadrangle 30 minutes square)" in which the place of shipment is situated and the 8 contiguous units; the outer limits of the second to the seventh zones, respectively, are approximately 150, 300, 600, 1000, 1400, and 1800 miles from the point of shipment; the eighth zone includes all units of area outside the seventh zone.

Zo*öl"o*gize (?), v. i. To study zoölogy; esp., to collect animals for study.

Zu"lu (?), n. [Also Zooloo.] 1. Any member of the tribe of Zulus; a Zulu- Kaffir. See Zulus.

2. (Philol.) One of the most important members of the South African, or Bantu, family of languages, spoken partly in Natal and partly in Zululand, but understood, and more or less in use, over a wide territory, at least as far north as the Zambezi; -- called also Zulu-Kaffir.

Zu"lu-Kaf"fir, n. A member of the Bantu race comprising the Zulus and the Kaffirs.

Zu"ñi*an (?), a. Of or pert. to the Zuñis, or designating their linguistic stock. -- n. A Zuñi.

||Zwie"back` (?), n. [G., fr. zwie- two, twice (see Twice) + backen to bake.] A kind of biscuit or rusk first baked in a loaf and afterwards cut and toasted.

Zwing"li*an (?), a. (Theol.) Of or pertaining to Ulric Zwingli (1481-1531), the reformer of German Switzerland, who maintained that in the Lord's Supper the true body of Christ is present by the contemplation of faith but not in essence or reality, and that the sacrament is a memorial without mystical elements. -- n. A follower of Zwingli.

||Zy*mol"y*sis (?), n. [NL. See Zyme, and Lysis.] (Physiol. Chem.) The action of enzymes; also, the changes produced by such action. -- Zy`mo*lyt"ic (#), a.

Zy"mo*scope (?), n. [Zyme + - scope.] (Physiol. Chem.) An apparatus for determining the fermenting power of yeast by measuring the amount of carbonic acid evolved from a given quantity of sugar.