| 1230 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1958 | A New Dictionary of Kanji Usage |
| 1567 | Classic Nelson (Andrew Nelson) |
| 1729 | Essential Kanji (P.G. O’Neill) |
| 1271 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1481 | Kanji and Kana (Spahn and Hadamitzky) |
| 1578 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1447 | Kanji in Context (Nishiguchi and Kono) |
| 609 | Kodansha Compact Kanji Guide |
| 430 | Kodansha Kanji Dictionary (Jack Halpern) |
| 266 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 320 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1896 | Les Kanjis dans la tete (Yves Maniette) |
| 9757X | Morohashi |
| 360 | New Japanese English Character Dictionary (Jack Halpern) |
| 1687 | New Nelson (John Haig) |
| 1878 | Remembering The Kanji (James Heisig) |
| 2023 | Remembering The Kanji, 6th edition (James Heisig) |
| 1224 | Tuttle Kanji Cards (Alexander Kask) |
arc, arch, bow
- On:
- コ
Jōyō kanji, taught in junior high
JLPT level N1
2371 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 弧 【コ】 arc
- 弧形 【コケイ】 arc
- 円弧 【エンコ】 arc
- 励弧 【レイコ】 excitation
Readings
- Korean:
- ho
Spanish
- arco
- circunferencia
Portuguese
- Arco
French
- arc de cercle
- arc
- arche
| 3562 | 2001 Kanji |
| 3h6.2 | The Kanji Dictionary |
| 1-3-6 | SKIP code |
| 1223.0 | Four corner code |
| 1-24-44 | JIS X 0208-1997 kuten code |
| 5f27 | Unicode hex code |
Jōyō kanji, taught in grade 4
JLPT level N2
1605 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 灯 【トウ】 light, lamp, counter for electric lights
- 灯台 【トウダイ】 lighthouse, old-fashioned interior light fixture comprising a wooden pole with an oil-filled dish and a wick atop it
- 消灯 【ショウトウ】 putting out the lights, turning off the lights
- 探海灯 【タンカイトウ】 searchlight
Kun reading compounds
- 灯 【ひ】 light, lamp
- 灯明かり 【ひあかり】 lamplight, torchlight
- 灯火 【ともしび】 light, lamp, torch
- 灯す 【ともす】 to light (a candle, lamp, etc.), to turn on (a light)
- 明かり 【あかり】 light, illumination, glow, gleam, lamp, light
- 明かりを消す 【あかりをけす】 to turn the lights off
Readings
- Korean:
- deung
Spanish
- lámpara
- luz
- contador para luces
Portuguese
- lâmpada
- luz
- sufixo p/ contagem de luzes
French
- lampe
- lumière
- compteur de lampes
| 583 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 556 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1290 | A New Dictionary of Kanji Usage |
| 2745 | Classic Nelson (Andrew Nelson) |
| 537 | Essential Kanji (P.G. O’Neill) |
| 711 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1333 | Kanji and Kana (Spahn and Hadamitzky) |
| 1416 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 871 | Kanji in Context (Nishiguchi and Kono) |
| 1262 | Kodansha Compact Kanji Guide |
| 1019 | Kodansha Kanji Dictionary (Jack Halpern) |
| 552 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 730 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 167 | Les Kanjis dans la tete (Yves Maniette) |
| 18855 | Morohashi |
| 825 | New Japanese English Character Dictionary (Jack Halpern) |
| 3395 | New Nelson (John Haig) |
| 165 | Remembering The Kanji (James Heisig) |
| 177 | Remembering The Kanji, 6th edition (James Heisig) |
| 471 | Tuttle Kanji Cards (Alexander Kask) |
| 1153 | 2001 Kanji |
| 4d2.1 | The Kanji Dictionary |
| 1-4-2 | SKIP code |
| 1-1-5 | SKIP code |
| 9182.0 | Four corner code |
| 1-37-84 | JIS X 0208-1997 kuten code |
| 706f | Unicode hex code |