Gneis'soid, a.
(nīs'soid), a. [Eng. gneiss and Gr. εἶδος, form.] Having some of the characteristics of gneiss;—applied to rocks of an intermediate character between granite and gneiss, or mica-slate and gneiss.
(nīs'soid), a. [Eng. gneiss and Gr. εἶδος, form.] Having some of the characteristics of gneiss;—applied to rocks of an intermediate character between granite and gneiss, or mica-slate and gneiss.