| 1581 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) | 
| 1985 | A New Dictionary of Kanji Usage | 
| 3325 | Classic Nelson (Andrew Nelson) | 
| 1486 | Essential Kanji (P.G. O’Neill) | 
| 1597 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) | 
| 1716 | Kanji and Kana (Spahn and Hadamitzky) | 
| 1833 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) | 
| 1674 | Kanji in Context (Nishiguchi and Kono) | 
| 1456 | Kodansha Compact Kanji Guide | 
| 2853 | Kodansha Kanji Dictionary (Jack Halpern) | 
| 1470 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) | 
| 1980 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) | 
| 1332 | Les Kanjis dans la tete (Yves Maniette) | 
| 25493 | Morohashi | 
| 2288 | New Japanese English Character Dictionary (Jack Halpern) | 
| 4200 | New Nelson (John Haig) | 
| 1321 | Remembering The Kanji (James Heisig) | 
| 1418 | Remembering The Kanji, 6th edition (James Heisig) | 
| 1467 | Tuttle Kanji Cards (Alexander Kask) | 
      plug up, obstruct
    
    - On:
- チツ
      Jōyō kanji, taught in junior high
    
    
      JLPT level N1
    
    
      1776 of 2500 most used kanji in newspapers
    
Stroke order
On reading compounds
- 脱窒 【ダッチツ】 denitrification, denitration
Readings
- Korean:
- jil, jeol
Spanish
- taponar
- obstruir
- nitrógeno
Portuguese
- tampar
- obstruir
- colocar um batoque
French
- obstruer
- suffoquer
- azote
| 772 | 2001 Kanji | 
| 3m8.9 | The Kanji Dictionary | 
| 2-3-8 | SKIP code | 
| 3010.4 | Four corner code | 
| 1-35-66 | JIS X 0208-1997 kuten code | 
| 7a92 | Unicode hex code |