| 1667 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1921 | A New Dictionary of Kanji Usage |
| 90 | Classic Nelson (Andrew Nelson) |
| 1882 | Essential Kanji (P.G. O’Neill) |
| 1086 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 323 | Japanese Names (P.G. O’Neill) |
| 1892 | Kanji and Kana (Spahn and Hadamitzky) |
| 2068 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1921 | Kanji in Context (Nishiguchi and Kono) |
| 175 | Kodansha Compact Kanji Guide |
| 4298 | Kodansha Kanji Dictionary (Jack Halpern) |
| 2174 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2928 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 34 | Les Kanjis dans la tete (Yves Maniette) |
| 1809 | Morohashi |
| 3486 | New Japanese English Character Dictionary (Jack Halpern) |
| 443 | New Nelson (John Haig) |
| 34 | Remembering The Kanji (James Heisig) |
| 34 | Remembering The Kanji, 6th edition (James Heisig) |
| 1040 | Tuttle Kanji Cards (Alexander Kask) |
Jōyō kanji, taught in junior high
JLPT level N1
2143 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 凸 【トツ】 convex
- 凸凹 【デコボコ】 unevenness, roughness, ruggedness, bumpiness, inequality, imbalance, unevenness, difference
- 凹凸 【オウトツ】 unevenness, bumpiness, roughness, ruggedness, imbalance, inequality, unevenness, disparity
- 両凸 【リョウトツ】 biconvex
Kun reading compounds
- 凸 【でこ】 brow, forehead, bump
- 凸凹 【でこぼこ】 unevenness, roughness, ruggedness, bumpiness, inequality, imbalance, unevenness, difference
Readings
- Korean:
- cheol, dol
Spanish
- convexo
- desigual
Portuguese
- convexo
- ímpar
French
- convexe
- inégal
- gros sourcils
| 3675 | 2001 Kanji |
| 0a5.13 | The Kanji Dictionary |
| 4-5-1 | SKIP code |
| 4-6-1 | SKIP code |
| 4-4-1 | SKIP code |
| 7777.7 | Four corner code |
| 1-38-44 | JIS X 0208-1997 kuten code |
| 51f8 | Unicode hex code |
Jōyō kanji, taught in grade 4
JLPT level N2
954 of 2500 most used kanji in newspapers
Stroke order
On reading compounds
- 包 【ホウ】 counter for packaged goods (esp. powdered medicine)
- 包囲 【ホウイ】 siege, encirclement, envelopment, surrounding, besiegement
- 内包 【ナイホウ】 connotation, comprehension, intension, inclusion, containment within
- 閉包 【ヘイホウ】 closure
Kun reading compounds
- 包む 【つつむ】 to wrap up, to pack, to bundle, to do up, to cover, to envelop, to shroud, to engulf, to conceal (a feeling), to hide, to give (money in an envelope; as a wedding gift, funeral offering, etc.)
- 包む 【くるむ】 to wrap up (in), to roll up (in), to tuck (up)
Readings
- Japanese names:
- お、 かね
- Korean:
- po
Spanish
- envolver
- empaquetar
- cubrir
Portuguese
- movimentar
- embrulhar
- capa
- esconde
French
- emballer
- envelopper
- recouvrir
- cacher
| 511 | A Guide To Reading and Writing Japanese (Florence Sakade) |
| 611 | A Guide To Reading and Writing Japanese 3rd edition (Henshall, Seeley and De Groot) |
| 583 | A Guide To Remembering Japanese Characters (Kenneth G. Henshall) |
| 1112 | A New Dictionary of Kanji Usage |
| 176 | Classic Nelson (Andrew Nelson) |
| 369 | Essential Kanji (P.G. O’Neill) |
| 377 | Japanese Kanji Flashcards (Max Hodges and Tomoko Okazaki) |
| 218 | Japanese Names (P.G. O’Neill) |
| 804 | Kanji and Kana (Spahn and Hadamitzky) |
| 819 | Kanji and Kana, 2nd Edition (Spahn and Hadamitzky) |
| 1013 | Kanji in Context (Nishiguchi and Kono) |
| 230 | Kodansha Compact Kanji Guide |
| 3684 | Kodansha Kanji Dictionary (Jack Halpern) |
| 1880 | Kodansha Kanji Learner’s Dictionary (Jack Halpern) |
| 2560 | Kodansha Kanji Learner’s Dictionary, 2nd Edition (Jack Halpern) |
| 536 | Les Kanjis dans la tete (Yves Maniette) |
| 2506P | Morohashi |
| 2966 | New Japanese English Character Dictionary (Jack Halpern) |
| 572 | New Nelson (John Haig) |
| 530 | Remembering The Kanji (James Heisig) |
| 569 | Remembering The Kanji, 6th edition (James Heisig) |
| 456 | Tuttle Kanji Cards (Alexander Kask) |
| 2556 | 2001 Kanji |
| 0a5.9 | The Kanji Dictionary |
| 3-2-3 | SKIP code |
| 4-5-2 | SKIP code |
| 2771.2 | Four corner code |
| 1-42-81 | JIS X 0208-1997 kuten code |
| 5305 | Unicode hex code |