Manganese
['mæŋgəniːz] or [,mæŋɡə'niz]
Definition
(noun.) a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals.
Edited by Julius--From WordNet
Definition
(n.) An element obtained by reduction of its oxide, as a hard, grayish white metal, fusible with difficulty, but easily oxidized. Its ores occur abundantly in nature as the minerals pyrolusite, manganite, etc. Symbol Mn. Atomic weight 54.8.
Typist: Moira
Synonyms and Synonymous
n. Black oxide of manganese (the oxide having the same name as the metal), peroxide or deutoxide of manganese.
Editor: Rosalie
Definition
n. a hard and brittle metal of a grayish-white colour somewhat like iron.—adjs. Manganē′sian Manganē′sic Mangan′ic Mang′anous; Manganif′erous.—n. Mang′anite gray ore of manganese used in glass manufacture.
Editor: Terence
Examples
- The manganese itself combines with part of the chlorine originally in the acid, but not with all. Bertha M. Clark. General Science.
- In these were found large quantities of iron, considerable percentages of nickel, as well as cobalt, copper, silicon, phosphorus, c arbon, magnesium, zinc, and manganese. Walter Libby. An Introduction to the History of Science.
- The use of manganese and other highly oxidisable metals for this purpose was discovered. William Henry Doolittle. Inventions in the Century.
- But that was for the manganese. George Eliot. Middlemarch.
- Professor Faraday as early as 1824 had noticed a change in colour gradually produced in glass containing oxide of manganese by exposure to the rays of the sun. William Henry Doolittle. Inventions in the Century.
- Preparing oxygen from potassium chlorate and manganese dioxide. Bertha M. Clark. General Science.
- Mix a small quantity of potassium chlorate with an equal amount of manganese dioxide and place the mixture in a strong test tube. Bertha M. Clark. General Science.
- Preparing chlorine from hydrochloric acid and manganese dioxide. Bertha M. Clark. General Science.
- Mushet (British patent No. 2,219, of 1856) of adding spiegeleisen, a triple compound of iron, carbon and manganese, to the charge in the converter. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- The heat causes the manganese dioxide to give up its oxygen, which immediately combines with the hydrogen of the hydrochloric acid and forms water. Bertha M. Clark. General Science.
Typed by Gladys