Corrosion

[Fr., from Lat. corrodo, corrosus, to corrode.] The gradual eating or wearing away of any substance, such as metal under the action of acids, by means of which its nature is completely changed by slow degrees. Corro's ive, a. Having the power of corroding, or of gradually eating, wearing, consuming, or impairing; as, a corrosive liquid. "Corrosive famine waits, and kills the year." - Thomson. -Having the quality of fretting or vexing; consuming by perturbation of spirits; preying upon. "Care is no cure, but rather corrosive , For things that are not to be remedied." - Shaks. C. sublimate. (Chem.) Bichloride of mercury. MERCURY. See IMG:content-0380.png:[blocks in formation] "Such speeches are grievous corrosives." - Hooker. Corrosively, adv , In a corrosive or fretting manner; with the power of corrosion. Corro's ivene , n . Quality of corroding or eating away; acrimony; acerbity; vexation. "Saltpetre betrays upon the tongue... no corrosivene at al''' Boyle. Corrosiv'ity, u. Corrosivene . Cor'rugant, a. [Lat. corrugans.] Having the power of contracting into wrinkles. Corrugate, v . a. [Lat. corrugo , corrugatus - con, and rugo , from ruga , a wrinkle.] To wrinkle; to draw or contract into folds or furrows; as, corrugated iron, a corrugated brow. -a. Wrinkled; furrowed. Corrugated Iron, n. (Metall.) Sheet-iron which has been rolled into a series of waves is known under this name; and in this form it is frequently used for temporary roofing, or for covering spaces in a definite manner. tine republic, lying between Entre Rios on the S., and the republic of Paraguay on the N., having the Parana on the N. and W. Lat. 27°-30° S., and Lon. 57° 59° W. Area , about 54,000 sq. m. The N. is undulating and fertile; and the S., besides being generally swampy, is partly covered by Lake Ybara. The products are maize, cotton, sugar, indigo, tobacco, and a species of silk. Pop . 290,000. CORRIENTES, the cap. of the above prov., stands in Lat. 27° 27' S. and Lon. 58° 46′ W., near the confluence of the Parana and the Paraguay. It takes its name from the rapids, which are said to be as decidedly a turning-point in the climate of the country as they are in the navigation of the river. Pop . (1897) abt. 18,000. Corrigendum, (kor-ri-jen'dum,) n.; pl . CORRIGENDA. [Lat. A word or thing to be avoided or corrected. Corrigent, n. ( Med .) A substance added to a medicine to nullify or modify its action.