| 618 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 715 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 689 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1027 | A New Dictionary of Kanji Usage |
| 4789 | Classic Nelson (Andrew Nelson) |
| 819 | Essential Kanji (P.G. O’Neill) |
| 1838 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 516 | Kanji and Kana (Spahn and Hadamitzky) |
| 525 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1420 | Kanji in Context (Nishiguchi and Kono) |
| 1797 | Kodansha Compact Kanji Guide |
| 1968 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1049 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1415 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1449 | Les Kanjis dans la tete (Yves Maniette) |
| 39871 | Morohashi |
| 1563 | New Japanese English Character Dictionary (Jack Halpern) |
| 6177 | New Nelson (John Haig) |
| 1437 | Remembering The Kanji (James Heisig) |
| 1545 | Remembering The Kanji, 6th edition (James Heisig) |
| 791 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 5
JLPT level N1
1218 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 酸 【サン】 acid, sourness, sour taste
- 酸化 【サンカ】 oxidation, oxidization
- 炭酸 【タンサン】 carbonic acid, carbonated water, carbonated drink, baking soda, sodium carbonate
- アミノ酸 【アミノサン】 amino acid
Kun reading compounds
- 酸い 【すい】 sour, acid
- 酸葉 【すいば】 sorrel (Rumex acetosa), Common sorrel, garden sorrel, spinach dock
Readings
- Korean:
- san
Spanish
- ácido
- agrio
Portuguese
- ácido
- amargo
- azedo
- picante
French
- acide
- aigre
- amer
- sur (goût)
| 3267 | 2001 Kanji |
| 7e7.2 | The Kanji Dictionary |
| 1-7-7 | SKIP code |
| 1364.7 | Four corner code |
| 1-27-32 | JIS X 0208-1997 kuten code |
| 9178 | Unicode hex code |
Jōyō kanji, taught in grade 5
JLPT level N3
104 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 性 【セイ】 nature (of a person), sex, gender, sex (i.e. sexual attraction, activity, etc.), gender, -ty, -ity, -ness, -cy
- 性格 【セイカク】 character (of a person), personality, disposition, nature, characteristics, nature (of a thing, event, etc.)
- 耐性 【タイセイ】 resistance (e.g. to antibiotics), tolerance (e.g. drug tolerance)
- 社会性 【シャカイセイ】 sociality
- 性 【ショウ】 nature, disposition, temperament, character, quality, that which does not change according to external influences
- 性根 【ショウネ】 nature, character, disposition
- 冷え性 【ヒエショウ】 sensitivity to cold
- 凝り性 【コリショウ】 tendency to become totally absorbed in something, monomania, perfectionism, fastidiousness, meticulousness, susceptibility for a stiffening of the shoulders
Kun reading compounds
- 性 【さが】 one's nature, one's destiny, custom, tradition, habit, convention
Readings
- Korean:
- seong
Spanish
- sexo
- género
- naturaleza
- temperamento
Portuguese
- sexo
- gênero
- natureza
French
- sexe
- genre
- nature
- propriétés
| 645 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 745 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 723 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 199 | A New Dictionary of Kanji Usage |
| 1666 | Classic Nelson (Andrew Nelson) |
| 280 | Essential Kanji (P.G. O’Neill) |
| 535 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 564 | Japanese Names (P.G. O’Neill) |
| 2.13 | Japanese for Busy People |
| 98 | Kanji and Kana (Spahn and Hadamitzky) |
| 98 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 421 | Kanji in Context (Nishiguchi and Kono) |
| 811 | Kodansha Compact Kanji Guide |
| 357 | Kodansha Kanji Dictionary (Jack Halpern) |
| 222 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 266 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1572 | Les Kanjis dans la tete (Yves Maniette) |
| 10478 | Morohashi |
| 299 | New Japanese English Character Dictionary (Jack Halpern) |
| 1822 | New Nelson (John Haig) |
| 1558 | Remembering The Kanji (James Heisig) |
| 1679 | Remembering The Kanji, 6th edition (James Heisig) |
| 119 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 690 | Tuttle Kanji Cards (Alexander Kask) |
| 1172 | 2001 Kanji |
| 4k5.4 | The Kanji Dictionary |
| 1-3-5 | SKIP code |
| 1-1-7 | SKIP code |
| 9501.0 | Four corner code |
| 1-32-13 | JIS X 0208-1997 kuten code |
| 6027 | Unicode hex code |