| 723 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 620 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 796 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 227 | A New Dictionary of Kanji Usage |
| 2773 | Classic Nelson (Andrew Nelson) |
| 386 | Essential Kanji (P.G. O’Neill) |
| 715 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1789 | Japanese Names (P.G. O’Neill) |
| 93 | Kanji and Kana (Spahn and Hadamitzky) |
| 93 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 400 | Kanji in Context (Nishiguchi and Kono) |
| 1280 | Kodansha Compact Kanji Guide |
| 2648 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1351 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1832 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1791 | Les Kanjis dans la tete (Yves Maniette) |
| 19113 | Morohashi |
| 2135 | New Japanese English Character Dictionary (Jack Halpern) |
| 3439 | New Nelson (John Haig) |
| 1775 | Remembering The Kanji (James Heisig) |
| 1913 | Remembering The Kanji, 6th edition (James Heisig) |
| 179 | The Kanji Way to Japanese Language Power (Dale Crowley) |
| 600 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in grade 4
274 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 無 【ム】 nothing, naught, nought, nil, zero, un-, non-
- 無意識 【ムイシキ】 unconsciousness, unconscious, involuntary, automatic, mechanical, unintentional, spontaneous, the unconscious
- 皆無 【カイム】 nonexistent, nil, none, nothing (at all), bugger-all
- 虚無 【キョム】 nihility, nothingness
- 無 【ブ】 un-, non-, bad ..., poor ...
- 不気味 【ブキミ】 weird, eerie, ominous, creepy, uncanny, unearthly
Kun reading compounds
- 無い 【ない】 nonexistent, not being (there), unowned, not had, unpossessed, unique, not, impossible, won't happen, not, to not be, to have not
- 【ないといけない】 have to (verb), must (verb), is indispensable, absolutely necessary
- 苦無 【くない】 ninja throwing knives, mediaeval farming tool for digging, prying, etc.
Readings
- Korean:
- mu
Spanish
- nada
- inexistente
- prefijo negativo
- no hay
Portuguese
- Sem valor
- nada
- não sou/ estou
- nihil
- não
French
- néant
- rien
- ne pas
- non
- in-
- négatif
| 2340 | 2001 Kanji |
| 4d8.8 | The Kanji Dictionary |
| 2-2-10 | SKIP code |
| 2-8-4 | SKIP code |
| 8033.1 | Four corner code |
| 1-44-21 | JIS X 0208-1997 kuten code |
| 7121 | Unicode hex code |
Jōyō kanji, taught in grade 2
JLPT level N2
382 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 線 【セン】 line, stripe, stria, line (e.g. telephone line), wire, ray (e.g. X-ray), beam, line (e.g. of a railroad), track, route, lane, outline, contours, form, level, division, line (of action), position, approach, policy, principle, impression one leaves, air one gives off
- 繊維 【センイ】 fibre, fiber, textile
- 横線 【オウセン】 horizontal line
- 赤外線 【セキガイセン】 infrared rays, infrared radiation
Readings
- Korean:
- seon
Spanish
- línea
- cable
- frontera
- raíl
- carril
Portuguese
- linha
- trilha
French
- ligne
- voie
| 447 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 176 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 329 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 247 | A New Dictionary of Kanji Usage |
| 3580 | Classic Nelson (Andrew Nelson) |
| 389 | Essential Kanji (P.G. O’Neill) |
| 826 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 2.20 | Japanese for Busy People |
| 299 | Kanji and Kana (Spahn and Hadamitzky) |
| 299 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 841 | Kanji in Context (Nishiguchi and Kono) |
| 1551 | Kodansha Compact Kanji Guide |
| 1760 | Kodansha Kanji Dictionary (Jack Halpern) |
| 944 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1273 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1351 | Les Kanjis dans la tete (Yves Maniette) |
| 27641 | Morohashi |
| 1392 | New Japanese English Character Dictionary (Jack Halpern) |
| 4548 | New Nelson (John Haig) |
| 1339 | Remembering The Kanji (James Heisig) |
| 1438 | Remembering The Kanji, 6th edition (James Heisig) |
| 236 | Tuttle Kanji Cards (Alexander Kask) |
| 2742 | 2001 Kanji |
| 6a9.7 | The Kanji Dictionary |
| 1-6-9 | SKIP code |
| 2693.2 | Four corner code |
| 1-32-94 | JIS X 0208-1997 kuten code |
| 7dda | Unicode hex code |
Jōyō kanji, taught in grade 2
JLPT level N4
550 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 室 【シツ】 room, wife (of someone of high rank), scabbard, Chinese "Encampment" constellation (one of the 28 mansions)
- 室長 【シツチョウ】 section chief, laboratory manager, office head, room monitor
- 同室 【ドウシツ】 same room, sharing a room, occupying the same room
- 皇室 【コウシツ】 Imperial household
Kun reading compounds
- 室 【むろ】 greenhouse, icehouse, cellar
- 室町 【むろまち】 Muromachi period (1336-1573)
- 石室 【せきしつ】 stone hut, rock chamber, tomb, stone burial chamber
- 氷室 【こおりむろ】 ice house, ice room, cold room
Readings
- Korean:
- sil
Spanish
- habitación
- cuarto
- caverna
- guarida
- gruta
Portuguese
- quarto
- apartamento
- câmara
- estufa
- porão
French
- pièce
- appartement
- chambre
- serre
- cave
| 232 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 152 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 136 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 421 | A New Dictionary of Kanji Usage |
| 1300 | Classic Nelson (Andrew Nelson) |
| 278 | Essential Kanji (P.G. O’Neill) |
| 157 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1183 | Japanese Names (P.G. O’Neill) |
| 3.5 | Japanese for Busy People |
| 166 | Kanji and Kana (Spahn and Hadamitzky) |
| 166 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 331 | Kanji in Context (Nishiguchi and Kono) |
| 477 | Kodansha Compact Kanji Guide |
| 2802 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1442 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 1943 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 761 | Les Kanjis dans la tete (Yves Maniette) |
| 7136 | Morohashi |
| 2254 | New Japanese English Character Dictionary (Jack Halpern) |
| 1327 | New Nelson (John Haig) |
| 754 | Remembering The Kanji (James Heisig) |
| 816 | Remembering The Kanji, 6th edition (James Heisig) |
| 176 | Tuttle Kanji Cards (Alexander Kask) |
| 772 | 2001 Kanji |
| 3m6.4 | The Kanji Dictionary |
| 2-3-6 | SKIP code |
| 3010.4 | Four corner code |
| 1-28-28 | JIS X 0208-1997 kuten code |
| 5ba4 | Unicode hex code |