Definition of 光行差 (こうこうさ)
こうこうさ
                        光行差
こうこうさ
koukousa
noun
•
        
aberration(astronomy term)
Related Kanji
| 光 | ray, light | 
| 行 | going, journey, carry out, conduct, act, line, row, bank | 
| 差 | distinction, difference, variation, discrepancy, margin, balance |