| 286 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 197 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 180 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 125 | A New Dictionary of Kanji Usage |
| 5050 | Classic Nelson (Andrew Nelson) |
| 222 | Essential Kanji (P.G. O’Neill) |
| 98 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2025 | Japanese Names (P.G. O’Neill) |
| 2.2 | Japanese for Busy People |
| 108 | Kanji and Kana (Spahn and Hadamitzky) |
| 108 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 61 | Kanji in Context (Nishiguchi and Kono) |
| 1862 | Kodansha Compact Kanji Guide |
| 3465 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1784 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2431 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 541 | Les Kanjis dans la tete (Yves Maniette) |
| 42253 | Morohashi |
| 2790 | New Japanese English Character Dictionary (Jack Halpern) |
| 6526 | New Nelson (John Haig) |
| 535 | Remembering The Kanji (James Heisig) |
| 574 | Remembering The Kanji, 6th edition (James Heisig) |
| 332 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 228 | Tuttle Kanji Cards (Alexander Kask) |
electricity
- On:
- デン
Jōyō kanji, taught in grade 2
JLPT level N5
268 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 電化 【デンカ】 electrification
- 電圧 【デンアツ】 voltage
- 送電 【ソウデン】 transmission of electricity, electricity supply, power supply
- 配電 【ハイデン】 distribution of electricity
Readings
- Korean:
- jeon
Spanish
- electricidad
- eléctrico
Portuguese
- eletricidade
French
- électricité
| 3156 | 2001 Kanji |
| 8d5.2 | The Kanji Dictionary |
| 2-8-5 | SKIP code |
| 1071.6 | Four corner code |
| 1-37-37 | JIS X 0208-1997 kuten code |
| 96fb | Unicode hex code |
Jōyō kanji, taught in junior high
JLPT level N1
2143 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 凸 【トツ】 convex
- 凸凹 【デコボコ】 unevenness, roughness, ruggedness, bumpiness, inequality, imbalance, unevenness, difference
- 凹凸 【オウトツ】 unevenness, bumpiness, roughness, ruggedness, imbalance, inequality, unevenness, disparity
- 両凸 【リョウトツ】 biconvex
Kun reading compounds
- 凸 【でこ】 brow, forehead, bump
- 凸凹 【でこぼこ】 unevenness, roughness, ruggedness, bumpiness, inequality, imbalance, unevenness, difference
Readings
- Korean:
- cheol, dol
Spanish
- convexo
- desigual
Portuguese
- convexo
- ímpar
French
- convexe
- inégal
- gros sourcils
| 1667 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1921 | A New Dictionary of Kanji Usage |
| 90 | Classic Nelson (Andrew Nelson) |
| 1882 | Essential Kanji (P.G. O’Neill) |
| 1086 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 323 | Japanese Names (P.G. O’Neill) |
| 1892 | Kanji and Kana (Spahn and Hadamitzky) |
| 2068 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1921 | Kanji in Context (Nishiguchi and Kono) |
| 175 | Kodansha Compact Kanji Guide |
| 4298 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2174 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2928 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 34 | Les Kanjis dans la tete (Yves Maniette) |
| 1809 | Morohashi |
| 3486 | New Japanese English Character Dictionary (Jack Halpern) |
| 443 | New Nelson (John Haig) |
| 34 | Remembering The Kanji (James Heisig) |
| 34 | Remembering The Kanji, 6th edition (James Heisig) |
| 1040 | Tuttle Kanji Cards (Alexander Kask) |
| 3675 | 2001 Kanji |
| 0a5.13 | The Kanji Dictionary |
| 4-5-1 | SKIP code |
| 4-6-1 | SKIP code |
| 4-4-1 | SKIP code |
| 7777.7 | Four corner code |
| 1-38-44 | JIS X 0208-1997 kuten code |
| 51f8 | Unicode hex code |