Letters that make birefringent
b, e, f, g, n, r, t, i are letters that make 'birefringent'
Words within birefringent
fringe, gen, re, NT, IR, ref, Inge, en, ng, RI, in, ire, ring, Gent, IN, Re, gent, Bi, Fr, Ge, In, Ir, Fri are words within 'birefringent'