| 3763 | Classic Nelson (Andrew Nelson) |
| 1212 | Japanese Names (P.G. O’Neill) |
| 1339 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 3297 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2317 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 29472 | Morohashi |
| 4804 | New Nelson (John Haig) |
| 2071 | Remembering The Kanji (James Heisig) |
| 268 | Remembering The Kanji, 6th edition (James Heisig) |
Jōyō kanji, taught in junior high
2299 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 脊椎 【セキツイ】 spine, vertebral column
- 脊髄 【セキズイ】 spinal cord
Kun reading compounds
- 背 【せ】 back, reverse, rear side, back (e.g. of a chair), spine (of a book), height, stature, ridge (of a mountain)
- 背 【せい】 height, stature
- 背 【せい】 height, stature
- 背丈 【せたけ】 stature, height
Readings
- Korean:
- cheog
Spanish
- columna vertebral
- espina dorsal
- espalda
- estatura
Portuguese
French
| 4b6.13 | The Kanji Dictionary |
| 2-6-4 | SKIP code |
| 1122.7 | Four corner code |
| 1-32-52 | JIS X 0208-1997 kuten code |
| 810a | Unicode hex code |
cord, rope, searching, inquiring
- On:
- サク
Jōyō kanji, taught in junior high
JLPT level N1
1127 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 索 【サク】 rope, cord
- 索引 【サクイン】 index (in a book)
- 模索 【モサク】 groping (for), fumbling around (for), searching (for an answer, solution, etc.), trying to find
- 神経索 【シンケイサク】 nerve cord
Readings
- Korean:
- sag, saeg
Spanish
- soga
- cordón
- cuerda
- buscar
- disperso
Portuguese
- corda
- cabo
French
- câble
- corde
- chercher (index)
| 1299 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1155 | A New Dictionary of Kanji Usage |
| 782 | Classic Nelson (Andrew Nelson) |
| 1762 | Essential Kanji (P.G. O’Neill) |
| 1625 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 1703 | Japanese Names (P.G. O’Neill) |
| 1059 | Kanji and Kana (Spahn and Hadamitzky) |
| 1104 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1301 | Kanji in Context (Nishiguchi and Kono) |
| 1505 | Kodansha Compact Kanji Guide |
| 3105 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1587 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2168 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 1377 | Les Kanjis dans la tete (Yves Maniette) |
| 27306 | Morohashi |
| 2455 | New Japanese English Character Dictionary (Jack Halpern) |
| 4449 | New Nelson (John Haig) |
| 1365 | Remembering The Kanji (James Heisig) |
| 1465 | Remembering The Kanji, 6th edition (James Heisig) |
| 1378 | Tuttle Kanji Cards (Alexander Kask) |
| 1541 | 2001 Kanji |
| 2k8.2 | The Kanji Dictionary |
| 2-4-6 | SKIP code |
| 2-2-8 | SKIP code |
| 4090.3 | Four corner code |
| 1-26-87 | JIS X 0208-1997 kuten code |
| 7d22 | Unicode hex code |