D defs.my
Entry 1 sense Webster, 1913

Borosilicate

· Bo·ro·sil·i·cate · IPA
01 n. A double salt of boric and silicic acids, as in the natural minerals tourmaline, datolite, etc.
  1. 1.
    A double salt of boric and silicic acids, as in the natural minerals tourmaline, datolite, etc.(Chem.)