prism Synonyms

optical prism concave lens achromatic lens variegation trapezohedron tetrahedron stone spectrum spectroscope spectrometer rainbow hand lens lumbermill concavo-convex lens coated lens astigmatic lens band of color collimating optic convex lens erecting prism gambrel roof foreseeable burning glass prismoid prismatically prismatic eyeglass dodecahedron decahedron cylinder curve curb roof cube condenser columnar bow eyepiece figure polyhedron parallelopiped ocular octahedron magnifier lens instrument icosahedron hexahedron gem blade