English-Thai Dictionary
pyrolusite
N แร่ แมงกานีส ได ออกไซด์
Webster's 1913 Dictionary
PYROLUSITE
Pyr `o *lu "site, n. Etym: [Pyro- + Gr. (Min. )
Defn: Manganese dioxide, a mineral of an iron-black or dark steel- gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name ).
New American Oxford Dictionary
pyrolusite
py ro lu site |ˌpīrōˈlo͞oˌsīt ˌpaɪroʊˈlusaɪt | ▶noun a black or dark gray mineral with a metallic luster, consisting of manganese dioxide. ORIGIN early 19th cent.: from pyro- ‘fire, heat ’ + Greek lousis ‘washing ’ (because of the mineral's use in decolorizing glass ).
Oxford Dictionary
pyrolusite
pyrolusite |ˌpʌɪrə (ʊ )ˈluːsʌɪt | ▶noun [ mass noun ] a black or dark grey mineral with a metallic lustre, consisting of manganese dioxide. ORIGIN early 19th cent.: from pyro- ‘fire, heat ’ + Greek lousis ‘washing ’ (because of the mineral's use in decolorizing glass ).
Duden Dictionary
Pyrolusit
Py ro lu sit Substantiv, maskulin , der |Pyrolus i t auch …ˈzɪt |der Pyrolusit; Genitiv: des Pyrolusits, Plural: die Pyrolusite Braunstein ein Mineral
The Wordsmith Dictionary