pyrolusite=بيرولوزيت

pyrolusite=بيرولوزيت

ONLINE ETYMOLOGY DICTIONARY:

pyrolusite (n.)

"manganese dioxide," the name given in Roman times, when it was used, in a heated state, to decolorize glass, from Greek elements pyro- "by heat, by fire" (see pyro-) + lysis "a loosening" (see lose).

pyro-

word-forming element form meaning "fire," from Gk. pyro-, combining form of pyr (gen. pyros) "fire" (see fire (n.)).

lose (v.)

O.E. losian "be lost, perish," from los "destruction, loss," from P.Gmc. *lausa- (cf. O.N. los "the breaking up of an army;" O.E. forleosan "to lose, destroy," O.Fris. forliasa, O.S. farliosan, M.Du. verliesen, O.H.G. firliosan, Ger. verlieren), from PIE root *leu- "to loosen, divide, cut apart, untie, separate" (cf. Skt. lunati "cuts, cuts off," lavitram "sickle;" Gk. lyein "to loosen, untie, slacken," lysus "a loosening;" L. luere "to loose, release, atone for, expiate").