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Corona

02325 Co*ro"na (k?-r?"n?), n.; pl. L. Coron\'91 (-n), E. Coronas (-nz). [L. corona crown. See Crown.] 1. A crown or garland bestowed among the Romans as a reward for distinguished services.2. (Arch.) The projecting part of a Classic cornice, the under side of which is cut with a recess or channel so as to form a drip. See Illust. of Column.3. (Anat.) The upper surface of some part, as of a tooth or the skull; a crown.4. (Zo\'94l.) The shelly skeleton of a sea urchin.5. (Astrol.) A peculiar luminous apearance, or aureola, which surrounds the sun, and which is seen only when the sun is totally eclipsed by the moon.6. (Bot.) (a) An inner appendage to a petal or a corolla, often forming a special cup, as in the daffodil and jonquil. (b) Any crownlike appendage at the top of an organ.7. (Meteorol.) (a) A circle, usually colored, seen in peculiar states of the atmosphere around and close to a luminous body, as the sun or moon. (b) A peculiar phase of the aurora borealis, formed by the concentration or convergence of luminous beams around the point in the heavens indicated by the direction of the dipping needle.8. A crown or circlet suspended from the roof or vaulting of churches, to hold tapers lighted on solemn occasions. It is sometimes formed of double or triple circlets, arranged pyramidically. Called also altname corona lucis /altname .Fairholt.9. (Mus.) A character [&pause;] called the altname pause /altname or altname hold /altname .

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Contact

02311 Con"tact (?), n. [L. contactus, fr. contingere, -tactum, to touch on all sides. See Contingent.] 1. A close union or junction of bodies; a touching or meeting.2. (Geom.) The property of two curves, or surfaces, which meet, and at the point of meeting have a common direction.3. (Mining) The plane between two adjacent bodies of dissimilar rock.Raymond.Contact level, a delicate level so pivoted as to tilt when two parts of a measuring apparatus come into contact with each other; -- used in precise determinations of lengths and in the accurate graduation of instruments.

Cork

02323 Cork (k?rk), n. [Cf. G., Dan., & Sw. kork, D. kurk; all fr. Sp. corcho, fr. L. cortex, corticis, bark, rind. Cf. Cortex.] 1. The outer layer of the bark of the cork tree (Quercus Suber), of which stoppers for bottles and casks are made. See Cutose.2. A stopper for a bottle or cask, cut out of cork.3. A mass of tabular cells formed in any kind of bark, in greater or less abundance. note &hand; Cork is sometimes used wrongly for calk, calker; calkin, a sharp piece of iron on the shoe of a horse or ox. /note Cork jackets, a jacket having thin pieces of cork inclosed within canvas, and used to aid in swimming. -- Cork tree (Bot.), the species of oak (Quercus Suber of Southern Europe) whose bark furnishes the cork of commerce.