| 356 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 453 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 431 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 187 | A New Dictionary of Kanji Usage |
| 716 | Classic Nelson (Andrew Nelson) |
| 787 | Essential Kanji (P.G. O’Neill) |
| 366 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 121 | Japanese Names (P.G. O’Neill) |
| 709 | Kanji and Kana (Spahn and Hadamitzky) |
| 722 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 295 | Kanji in Context (Nishiguchi and Kono) |
| 208 | Kodansha Compact Kanji Guide |
| 42 | Kodansha Kanji Dictionary (Jack Halpern) |
| 23 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 24 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 876 | Les Kanjis dans la tete (Yves Maniette) |
| 2297 | Morohashi |
| 38 | New Japanese English Character Dictionary (Jack Halpern) |
| 523 | New Nelson (John Haig) |
| 867 | Remembering The Kanji (James Heisig) |
| 932 | Remembering The Kanji, 6th edition (James Heisig) |
| 237 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 447 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 4
JLPT level N3
130 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 加 【カ】 addition, Canada
- 加圧 【カアツ】 increasing pressure
- 添加 【テンカ】 addition, annexing
- 倍加 【バイカ】 doubling, marked increase, multiplying, redoubling
Kun reading compounds
- 加える 【くわえる】 to add, to add up, to sum up, to append, to annex, to increase, to gather (e.g. speed), to pick up, to include, to count in, to let join, to inflict (damage), to deal, to give
- 加わる 【くわわる】 to be added to, to be appended, to join in (e.g. a group of friends), to participate, to increase (e.g. heat), to gain in (e.g. influence), to grow, to gather (speed), to be applied (e.g. heat, pressure), to be exerted
Readings
- Korean:
- ga
Spanish
- agregar
- añadir
- incrementar
- Canadá
- sumar
- unirse
Portuguese
- somar
- adição
- aumento
- unir
- incluir
- Canadá
French
- ajouter
- addition
- augmentation
- rejoindre
- inclure
- Canada
| 1677 | 2001 Kanji |
| 2g3.1 | The Kanji Dictionary |
| 1-2-3 | SKIP code |
| 4600.0 | Four corner code |
| 1-18-35 | JIS X 0208-1997 kuten code |
| 52a0 | Unicode hex code |
sulphur
- On:
- リュウ
Jōyō kanji, taught in junior high
JLPT level N1
1867 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 硫化 【リュウカ】 sulfuration, sulphuration
- 硫安 【リュウアン】 ammonium sulfate
- 脱硫 【ダツリュウ】 desulfurization, desulphurisation, desulphurization
- 加硫 【カリュウ】 vulcanizing (rubber)
Readings
- Korean:
- ryu
Spanish
- azufre abreviatura de ácido sulfúrico
Portuguese
- enxofre
French
- soufre
| 1902 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1500 | A New Dictionary of Kanji Usage |
| 3191 | Classic Nelson (Andrew Nelson) |
| 1596 | Essential Kanji (P.G. O’Neill) |
| 1571 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1856 | Kanji and Kana (Spahn and Hadamitzky) |
| 2012 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1551 | Kanji in Context (Nishiguchi and Kono) |
| 1405 | Kodansha Compact Kanji Guide |
| 1519 | Kodansha Kanji Dictionary (Jack Halpern) |
| 803 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1096 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 770 | Les Kanjis dans la tete (Yves Maniette) |
| 24229 | Morohashi |
| 1184 | New Japanese English Character Dictionary (Jack Halpern) |
| 4006 | New Nelson (John Haig) |
| 763 | Remembering The Kanji (James Heisig) |
| 825 | Remembering The Kanji, 6th edition (James Heisig) |
| 1573 | Tuttle Kanji Cards (Alexander Kask) |
| 3357 | 2001 Kanji |
| 5a7.3 | The Kanji Dictionary |
| 1-5-7 | SKIP code |
| 1061.3 | Four corner code |
| 1-46-18 | JIS X 0208-1997 kuten code |
| 786b | Unicode hex code |