ShIShA

ShIShA, moddai sakht, amorfi, shaffofero guyand, ki dar natijai az had ziyod khunuk kardani gudokhtahoi makhsusi oksidho (kremniy, bor, alyuminiy, fosfor va g.) va oksidi metallho (litiy, kaliy, magniy, surb va g.) hosil meshavand. Beshtar shishai silikati mamul ast. Istehsoli Sh. dar Misri Qadim paydo shudaast (s. 4000 to m.) Masnuoti shishaginro tavassuti damdihi, pressoni va rekhtagari tayyor mekunand.