罗氏几何 luóshìjǐhé hyperbolic geometry Origin Definitions Defs Strokes Stroke Words Sentences Sents 罗 luó phonetic 氏 shì noun [honorific suffix] Added after surnames to refer to a person, a family, or a school of thought; often used for historical figures, celebrities, or professionals.几何 幾何 jǐhé geometry geometry; often used as a short form for 几何学 jǐhéxué