| 1934 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1414 | A New Dictionary of Kanji Usage |
| 2750 | Classic Nelson (Andrew Nelson) |
| 1726 | Essential Kanji (P.G. O’Neill) |
| 1511 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1790 | Kanji and Kana (Spahn and Hadamitzky) |
| 1926 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1802 | Kanji in Context (Nishiguchi and Kono) |
| 1266 | Kodansha Compact Kanji Guide |
| 1079 | Kodansha Kanji Dictionary (Jack Halpern) |
| 583 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 772 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1089 | Les Kanjis dans la tete (Yves Maniette) |
| 18902X | Morohashi |
| 869 | New Japanese English Character Dictionary (Jack Halpern) |
| 3403 | New Nelson (John Haig) |
| 1080 | Remembering The Kanji (James Heisig) |
| 1161 | Remembering The Kanji, 6th edition (James Heisig) |
| 1209 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
1359 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 炉 【ロ】 hearth, fireplace, furnace, kiln
- 炉心 【ロシン】 nuclear reactor core
- 原子炉 【ゲンシロ】 atomic reactor, nuclear reactor
- 高炉 【コウロ】 blast furnace
Readings
- Korean:
- ro
Spanish
- chimenea
- horno
- fundición
Portuguese
- lareira
- forno
- fornalha
- reator
French
- fournaise
- foyer
- four
- réacteur
| 1160 | 2001 Kanji |
| 4d4.2 | The Kanji Dictionary |
| 1-4-4 | SKIP code |
| 1-1-7 | SKIP code |
| 9387.7 | Four corner code |
| 9382.7 | Four corner code |
| 1-47-07 | JIS X 0208-1997 kuten code |
| 7089 | Unicode hex code |
Stroke order
On reading compounds
- 霍乱 【カクラン】 sunstroke, heatstroke
Readings
- Japanese names:
- つる
- Korean:
- gwag
Spanish
Portuguese
French
| 42321 | Morohashi |
| 6533 | New Nelson (John Haig) |
| 8d8.1 | The Kanji Dictionary |
| 2-8-8 | SKIP code |
| 1021.4 | Four corner code |
| 1-80-25 | JIS X 0208-1997 kuten code |
| 970d | Unicode hex code |
Jōyō kanji, taught in grade 3
JLPT level N2
140 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 県 【ケン】 prefecture (of Japan), county (of China, Taiwan, Norway, etc.), department (of France), province (of Italy, Spain, etc.)
- 県営 【ケンエイ】 (under) prefectural management
- 都道府県 【トドウフケン】 prefectures (of Japan), largest administrative divisions of Japan: Tokyo-to, Osaka-fu, Kyoto-fu, Hokkaido and the remaining prefectures
- 同県 【ドウケン】 the same prefecture, the said prefecture
Readings
- Japanese names:
- あがた、 がた
- Korean:
- hyeon
Spanish
- prefectura
Portuguese
- Condado
- prefeitura (região)
French
- préfecture
- département
| 203 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 291 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 273 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 195 | A New Dictionary of Kanji Usage |
| 1362 | Classic Nelson (Andrew Nelson) |
| 381 | Essential Kanji (P.G. O’Neill) |
| 226 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1252 | Japanese Names (P.G. O’Neill) |
| 194 | Kanji and Kana (Spahn and Hadamitzky) |
| 194 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 336 | Kanji in Context (Nishiguchi and Kono) |
| 1380 | Kodansha Compact Kanji Guide |
| 3269 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1687 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2294 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 126 | Les Kanjis dans la tete (Yves Maniette) |
| 23210P | Morohashi |
| 2641 | New Japanese English Character Dictionary (Jack Halpern) |
| 3918 | New Nelson (John Haig) |
| 513 | Remembering The Kanji (James Heisig) |
| 552 | Remembering The Kanji, 6th edition (James Heisig) |
| 326 | Tuttle Kanji Cards (Alexander Kask) |
| 1241 | 2001 Kanji |
| 3n6.3 | The Kanji Dictionary |
| 2-6-3 | SKIP code |
| 3-4-5 | SKIP code |
| 2-5-4 | SKIP code |
| 2690.1 | Four corner code |
| 1-24-09 | JIS X 0208-1997 kuten code |
| 770c | Unicode hex code |