| 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 grade 2
JLPT level N2
382 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 線 【セン】 line, stripe, stria, line (e.g. telephone line), wire, ray (e.g. X-ray), beam, line (e.g. of a railroad), track, route, lane, outline, contours, form, level, division, line (of action), position, approach, policy, principle, impression one leaves, air one gives off
- 繊維 【センイ】 fibre, fiber, textile
- 横線 【オウセン】 horizontal line
- 赤外線 【セキガイセン】 infrared rays, infrared radiation
Readings
- Korean:
- seon
Spanish
- línea
- cable
- frontera
- raíl
- carril
Portuguese
- linha
- trilha
French
- ligne
- voie
| 447 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 176 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 329 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 247 | A New Dictionary of Kanji Usage |
| 3580 | Classic Nelson (Andrew Nelson) |
| 389 | Essential Kanji (P.G. O’Neill) |
| 826 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2.20 | Japanese for Busy People |
| 299 | Kanji and Kana (Spahn and Hadamitzky) |
| 299 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 841 | Kanji in Context (Nishiguchi and Kono) |
| 1551 | Kodansha Compact Kanji Guide |
| 1760 | Kodansha Kanji Dictionary (Jack Halpern) |
| 944 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1273 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1351 | Les Kanjis dans la tete (Yves Maniette) |
| 27641 | Morohashi |
| 1392 | New Japanese English Character Dictionary (Jack Halpern) |
| 4548 | New Nelson (John Haig) |
| 1339 | Remembering The Kanji (James Heisig) |
| 1438 | Remembering The Kanji, 6th edition (James Heisig) |
| 236 | Tuttle Kanji Cards (Alexander Kask) |
| 2742 | 2001 Kanji |
| 6a9.7 | The Kanji Dictionary |
| 1-6-9 | SKIP code |
| 2693.2 | Four corner code |
| 1-32-94 | JIS X 0208-1997 kuten code |
| 7dda | Unicode hex code |