| 3157 | Classic Nelson (Andrew Nelson) |
| 2630 | Japanese Names (P.G. O’Neill) |
| 2173 | Kanji and Kana (Spahn and Hadamitzky) |
| 1852 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1583 | Kodansha Kanji Dictionary (Jack Halpern) |
| 836 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1144 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 444 | Les Kanjis dans la tete (Yves Maniette) |
| 23707 | Morohashi |
| 1237 | New Japanese English Character Dictionary (Jack Halpern) |
| 3961 | New Nelson (John Haig) |
| 437 | Remembering The Kanji (James Heisig) |
| 469 | Remembering The Kanji, 6th edition (James Heisig) |
Jōyō kanji, taught in junior high
JLPT level N1
2069 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 瞳孔 【ドウコウ】 pupil (of the eye)
- 瞳孔拡張 【ドウコウカクチョウ】 pupil dilation
- 縮瞳 【シュクドウ】 miosis, myosis
- 散瞳 【サンドウ】 mydriasis
Kun reading compounds
- 瞳 【ひとみ】 pupil (of the eye), one's eyes
- 瞳を凝らす 【ひとみをこらす】 to strain one's eyes, to stare
Readings
- Japanese names:
- あきら
- Korean:
- dong
Spanish
- pupila
Portuguese
French
- pupille (oeil)
| 3972 | 2001 Kanji |
| 5c12.2 | The Kanji Dictionary |
| 1-5-12 | SKIP code |
| 6001.4 | Four corner code |
| 1-38-23 | JIS X 0208-1997 kuten code |
| 77b3 | 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, orifice, perforation, pit, hollow, cavity, hole (e.g. in the ground), burrow, den, lair, holt, hole, deficit, shortage, (financial) hole, loss, gap (left by a missing employee, team member, etc.), vacancy, opening, flaw, fault, defect, weak point, hole (in a theory, plan, etc.), loophole, good place not many people know about, well-kept secret, upset victory (with a large payoff), long shot, dark horse, (partitioned) box (type of floor seating in a traditional Japanese theatre), hiding place, hideout
- 鍵穴 【かぎあな】 keyhole
- 巣穴 【すあな】 nesting hole, burrow, den
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 |
| 1-25-06 | JIS X 0208-1997 kuten code |
| 5b54 | Unicode hex code |