SULPHURIC a. 2 definitions
ly liquid, H2SO4, colorless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fumes. It attacks and dissolves many metals and other intractable substances, sets free most acids from their salts, and is used in the manufacture of hy…
TELLURIUM n.
, occasionally found native as a substance of a silver-white metallic luster, but usually combined with metals, as with gold and silver in the mineral sylvanite, with mercury in Coloradoite, etc. Symbol Te. Atomic weight 125.2. Graphic tellurium. (Min.) See Sylvanite. -- Tellurium glance (Min.), nagyagite; -- called a…
UNITED a.
Combined; joined; made one. United Brethren. (Eccl.) See Moravian, n. -- United flowers (Bot.), flowers which have the stamens and pistils in the same flower. -- The United Kingdom, Great Britain and Ireland; -- so named since January 1, 1801, when the Legislative Union went into operation. -- United Greeks (Eccl.),…
URIC a.
acid, a crystalline body, present in small quantity in the urine of man and most mammals. Combined in the form of urate of ammonia, it is the chief constituent of the urine of birds and reptiles, forming the white part. Traces of it are also found in the various organs of the body. It is likewise a common constituent,…
VANADIUM n.
A rare element of the nitrogen-phosphorus group, found combined, in vanadates, in certain minerals, and reduced as an infusible, grayish-white metallic powder. It is intermediate between the metals and the non-metals, having both basic and acid properties. Sumbol V (or Vd, rarely). Atomic weight 51.2.…
VARIATION n. 5 definitions
ron.), the yearly change in the right ascension or declination of a star, produced by the combined effects of the precession of the equinoxes and the proper motion of the star. -- Calculus of variations. See under Calculus. -- Variation compass. See under Compass. -- Variation of the moon (Astron.), an inequality of…