| 1314 | A New Dictionary of Kanji Usage |
| 2296 | Classic Nelson (Andrew Nelson) |
| 1629 | Japanese Names (P.G. O’Neill) |
| 2116 | Kanji and Kana (Spahn and Hadamitzky) |
| 1748 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1249 | Kodansha Kanji Dictionary (Jack Halpern) |
| 679 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 905 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 15024 | Morohashi |
| 2742 | New Nelson (John Haig) |
| 2505 | Remembering The Kanji (James Heisig) |
| 597 | Remembering The Kanji, 6th edition (James Heisig) |
Jōyō kanji, taught in junior high
JLPT level N1
1911 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 椎間板 【ツイカンバン】 intervertebral disk
- 椎間板ヘルニア 【ツイカンバンヘルニア】 disk herniation, herniated disk, hernia of intervertebral disk, slipped disk
- 脊椎 【セキツイ】 spine, vertebral column
- 腰椎 【ヨウツイ】 lumbar vertebra, lumbar vertebrae
Readings
- Japanese names:
- しい
- Korean:
- chu
Spanish
- roble
- mazo
Portuguese
French
| 4a8.1 | The Kanji Dictionary |
| 1-4-8 | SKIP code |
| 4091.4 | Four corner code |
| 1-36-39 | JIS X 0208-1997 kuten code |
| 690e | Unicode hex code |
Jōyō kanji, taught in junior high
JLPT level N1
2052 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 孔子 【コウシ】 Confucius
- 孔隙率 【コウゲキリツ】 porosity
- 瞳孔 【ドウコウ】 pupil (of the eye)
- 鰓孔 【エラアナ】 gill slit, pharyngeal slit
- 孔雀 【クジャク】 peafowl (incl. the male peacock, female peahen, and young peachick)
- 孔子 【コウシ】 Confucius
Kun reading compounds
- 穴 【あな】 hole, opening, perforation, pit, hollow, hole (in the ground, etc.), burrow, den, lair, holt, hole, deficit, shortage, missing person (in a team, meeting, etc.), vacancy, opening, flaw, well-kept secret place, upset victory (with a large payoff), pit (of a theater), hiding place, hideout, underbelly (of society, etc.)
- 巣穴 【すあな】 nesting hole, burrow, den
- 音孔 【おとあな】 tone hole
Readings
- Japanese names:
- のり
- Korean:
- gong
Spanish
- cavidad
- agujero
- raja
- grieta
Portuguese
- Cavidade
- buraco
- fenda
- muito
- grande
- excessivamente
French
- cavité
- trou
- fente
- très
- grand
- extrêmement
| 1241 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1755 | A New Dictionary of Kanji Usage |
| 1265 | Classic Nelson (Andrew Nelson) |
| 1336 | Essential Kanji (P.G. O’Neill) |
| 1203 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 58 | Japanese Names (P.G. O’Neill) |
| 940 | Kanji and Kana (Spahn and Hadamitzky) |
| 970 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1881 | Kanji in Context (Nishiguchi and Kono) |
| 456 | Kodansha Compact Kanji Guide |
| 205 | Kodansha Kanji Dictionary (Jack Halpern) |
| 131 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 158 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 97 | Les Kanjis dans la tete (Yves Maniette) |
| 6933 | Morohashi |
| 179 | New Japanese English Character Dictionary (Jack Halpern) |
| 1282 | New Nelson (John Haig) |
| 96 | Remembering The Kanji (James Heisig) |
| 100 | Remembering The Kanji, 6th edition (James Heisig) |
| 1028 | Tuttle Kanji Cards (Alexander Kask) |
| 3556 | 2001 Kanji |
| 2c1.1 | The Kanji Dictionary |
| 1-3-1 | SKIP code |
| 1-2-1 | SKIP code |
| 1241.0 | Four corner code |
| 1-25-6 | JIS X 0208-1997 kuten code |
| 5b54 | Unicode hex code |