| Readings | On-reading | てつ |
| Kun-reading | - | |
| Meaning | to penetrate | |
| Radical | 彳 | |
| Stroke count | １５ | |
| JLPT Level | N1 | |
Stroke order of 「徹」
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Vocabulary contains 「徹」
| Word | Meaning |
| 徹夜（てつや） | all night |
| 徹底（てってい） | completeness / thoroughness |
