| 余 |
yú xián | (math.) cosine |
| 余 |
Yú | surname Yu |
| 余 |
yú | (literary) I; me / variant of 余 |
| 余 |
yú | extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me |
| 弦 |
xián | bow string / string of musical instrument / watchspring / chord (segment of curve) / hypotenuse / CL:根 |