Trends ofpsilomelane
View usage for:
psilomelane in British English
(sɪˈlɒmɪˌleɪn)
noun
a common black to grey secondary mineral consisting of hydrated basic oxide of manganese and barium: a source of manganese. Formula: BaMn9O16(OH)4
Also called: romaniciteWord origin
C19: from Greek psilos bare + melas blackpsilomelane in American English
(saiˈlɑməˌlein)
noun
a common mineral consisting of a mixture of pyrolusite and other oxides of manganese, usually found in black, rounded masses: an ore of manganese
Word origin
[1825–35; ‹ Gk psīló(s) bare, smooth + mélan, neut. of mélas black]This word is first recorded in the period 1825–35. Other words that entered Englishat around the same time include: breakdown, individualism, panda, relativity, runwayImage ofpsilomelane
© Sementer, Shutterstock