Biography Category
( ´z ngl s´´) (KEY) , gelatinous semitransparent substance obtained by cleaning and drying the air bladders of the sturgeon, cod, hake, and other f...
( ´s m r) (KEY) , in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the...
1856–1937, American inventor, b. Litchfield, Conn. A pioneer in the development of orthochromatic and trichromatic photography and of photoengraving...
1494–1559, series of regional wars brought on by the efforts of the great European powers to control the small independent states of Italy. Renaissa...
isopropyl alcohol, or 2-propanol ( ´´s pr ´p n l, ´´s pr ´p l) (KEY) , (CH3)2CHOH, a colorless liquid that is miscible with water. It melts at...
( s´kyä) (KEY) , volcanic island (1991 pop. 16,013), 18 sq mi (47 sq km), Campania, S Italy, in the Tyrrhenian Sea between the Gulf of Gaeta and the...