| 1048 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1850 | A New Dictionary of Kanji Usage |
| 2629 | Classic Nelson (Andrew Nelson) |
| 1823 | Essential Kanji (P.G. O’Neill) |
| 1485 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1810 | Kanji and Kana (Spahn and Hadamitzky) |
| 1949 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1498 | Kanji in Context (Nishiguchi and Kono) |
| 1218 | Kodansha Compact Kanji Guide |
| 735 | Kodansha Kanji Dictionary (Jack Halpern) |
| 438 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 550 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1301 | Les Kanjis dans la tete (Yves Maniette) |
| 17771 | Morohashi |
| 603 | New Japanese English Character Dictionary (Jack Halpern) |
| 3241 | New Nelson (John Haig) |
| 1292 | Remembering The Kanji (James Heisig) |
| 1387 | Remembering The Kanji, 6th edition (James Heisig) |
| 1558 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
1789 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 渦中 【カチュウ】 vortex, maelstrom, whirlpool, (in the middle of a) scandal, controversy, quarrel, turmoil
- 渦状 【カジョウ】 spiral
- 冷水渦 【レイスイウズ】 cold eddy
- 極渦 【キョクウズ】 polar vortex, polar cell
Kun reading compounds
- 渦 【うず】 whirlpool, swirl, eddy, vortex, maelstrom
- 渦巻き 【うずまき】 whirlpool, maelstrom, vortex, eddy, swirl, spiral (shape, pattern)
- 冷水渦 【れいすいうず】 cold eddy
- 暖水渦 【だんすいうず】 warm eddy
Readings
- Korean:
- wa
Spanish
- remolino de agua
- vórtice
Portuguese
- redemoinho
- turbilhão
French
- tourbillon
- remous
- vortex
| 349 | 2001 Kanji |
| 3a9.36 | The Kanji Dictionary |
| 1-3-9 | SKIP code |
| 3712.7 | Four corner code |
| 1-17-18 | JIS X 0208-1997 kuten code |
| 6e26 | Unicode hex code |
Jōyō kanji, taught in junior high
JLPT level N1
1491 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 雷 【カミナリ】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雨 【ライウ】 thunderstorm
- 機雷 【キライ】 (sea) mine
- 界雷 【カイライ】 frontal thunderstorm
Kun reading compounds
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雲 【らいうん】 thundercloud
- 水雷 【みずがみなり】 thunder accompanied by rain, lightning that does not start a fire
- 日雷 【ひがみなり】 thunder on a clear day, lightning that starts a fire
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
- 雷雲 【らいうん】 thundercloud
- 雷 【かみなり】 lightning, thunder, thunderbolt, god of thunder, god of lightning, anger, fit of anger
Readings
- Korean:
- roe
Spanish
- trueno
- relámpago
- rayo
Portuguese
- trovão
- raio
French
- tonnerre
- foudre
| 1888 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1524 | A New Dictionary of Kanji Usage |
| 5049 | Classic Nelson (Andrew Nelson) |
| 1204 | Essential Kanji (P.G. O’Neill) |
| 1889 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2026 | Japanese Names (P.G. O’Neill) |
| 952 | Kanji and Kana (Spahn and Hadamitzky) |
| 982 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 843 | Kanji in Context (Nishiguchi and Kono) |
| 1863 | Kodansha Compact Kanji Guide |
| 3466 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1785 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2432 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 432 | Les Kanjis dans la tete (Yves Maniette) |
| 42245 | Morohashi |
| 2791 | New Japanese English Character Dictionary (Jack Halpern) |
| 6525 | New Nelson (John Haig) |
| 425 | Remembering The Kanji (James Heisig) |
| 454 | Remembering The Kanji, 6th edition (James Heisig) |
| 1685 | Tuttle Kanji Cards (Alexander Kask) |
| 3176 | 2001 Kanji |
| 8d5.1 | The Kanji Dictionary |
| 2-8-5 | SKIP code |
| 1060.1 | Four corner code |
| 1060.3 | Four corner code |
| 1-45-75 | JIS X 0208-1997 kuten code |
| 96f7 | Unicode hex code |