| 1824 | A New Dictionary of Kanji Usage |
| 4894 | Classic Nelson (Andrew Nelson) |
| 2652 | Japanese Names (P.G. O’Neill) |
| 915 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 2203 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1565 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 40654 | Morohashi |
| 1753 | New Japanese English Character Dictionary (Jack Halpern) |
| 6317 | New Nelson (John Haig) |
| 2761 | Remembering The Kanji (James Heisig) |
| 418 | Remembering The Kanji, 6th edition (James Heisig) |
Stroke order
On reading compounds
- 鍵 【ケン】 key (on a piano, organ, etc.)
- 鍵盤 【ケンバン】 keyboard (of a piano, typewriter, etc.)
- 打鍵 【ダケン】 keystroke
- 黒鍵 【コッケン】 black key (on a piano, organ, etc.)
Kun reading compounds
- 鍵 【かぎ】 key, lock, key (to a problem, success, etc.), clue
- 鍵垢 【かぎアカ】 private account (on social media, esp. Twitter), account that can only be viewed by approved followers
- 公開鍵 【こうかいかぎ】 public key
- 暗号鍵 【あんごうかぎ】 cryptographic key, encryption key
Readings
- Korean:
- geon
Spanish
- llave
- tecla (piano
- órgano
- etc.)
Portuguese
French
| 8a8.18 | The Kanji Dictionary |
| 1-8-9 | SKIP code |
| 1-8-8 | SKIP code |
| 8514.0 | Four corner code |
| 1-24-16 | JIS X 0208-1997 kuten code |
| 9375 | Unicode hex code |
stratum, social class, layer, story, floor
- On:
- ソウ
Jōyō kanji, taught in grade 6
JLPT level N2
801 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 層 【ソウ】 layer, stratum, seam, bed, class, stratum, bracket, group, sheaf, counter for stories (of a building)
- 層群 【ソウグン】 (geol) group
- 重層 【ジュウソウ】 multistoried, multilayered
- 高層 【コウソウ】 high-rise (building), multistory, multistoried, tall, high (altitude), upper (atmosphere, air current, etc.)
Readings
- Korean:
- cheung
Spanish
- estrato
- nivel
Portuguese
- estrato
- classe social
- camada
- estória
- andar
French
- strate
- classe sociale
- couche
- étage
| 934 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 921 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 893 | A New Dictionary of Kanji Usage |
| 1402 | Classic Nelson (Andrew Nelson) |
| 1183 | Essential Kanji (P.G. O’Neill) |
| 486 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1367 | Kanji and Kana (Spahn and Hadamitzky) |
| 1454 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1725 | Kanji in Context (Nishiguchi and Kono) |
| 533 | Kodansha Compact Kanji Guide |
| 3920 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2021 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2728 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1074 | Les Kanjis dans la tete (Yves Maniette) |
| 7798X | Morohashi |
| 3161 | New Japanese English Character Dictionary (Jack Halpern) |
| 1432 | New Nelson (John Haig) |
| 1065 | Remembering The Kanji (James Heisig) |
| 1146 | Remembering The Kanji, 6th edition (James Heisig) |
| 977 | Tuttle Kanji Cards (Alexander Kask) |
| 3778 | 2001 Kanji |
| 3r11.2 | The Kanji Dictionary |
| 3-3-11 | SKIP code |
| 7726.6 | Four corner code |
| 1-33-56 | JIS X 0208-1997 kuten code |
| 5c64 | Unicode hex code |