幾何光學 Save Sign in to save words Simplified: 几何光学 jǐhéguāngxué ㄐㄧˇ ㄏㄜˊ ㄍㄨㄤ ㄒㄩㄝˊ geometric optics Character by character 幾(jǐ)how many 何(hé)surname He 光(guāng)light 學(xué)learn A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0