n08572335
| type | n |
| lex_filenum | 15 |
| def | a fixed reference point on the concave side of a conic section |
| Outgoing links | |
| Hypernym | point |
| Derivationally related form | focus → focal |
| Incoming links | |
| Derivationally related form | focal → focus |
| Hyponym | point |
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