凸
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to stick out; protruding; convex; male (connector etc); Taiwan pr. [tu2]
- HSK 3.0
- Level 7–9
- Old HSK
- Level 6
- Strokes
- 5
- Radical
- 凵 +3
- Structure
- Top–bottom 上下
- Traditional
- 凸
- Common rank
- #1,698
- Unicode
- U+51F8
Sound it out + =
Formation & memory
Break the character into parts you already know.
How to remember it
convex · Heisig RSH #32
Keyword method from Heisig's Remembering Simplified Hanzi.
Words with 凸
The most common words first — learning a character in context makes it stick.
| Word | Pinyin | Meaning |
|---|---|---|
| 凸多面体 | convex polyhedron | |
| 凸多边形 | convex polygon | |
| 凸面体 | convex body | |
| 双凸面 | convex on both sides (of lens); biconvex | |
| 凸多胞形 | convex polytope | |
| 凸面镜 | convex mirror | |
| 凸折线 | convex polygonal line | |
| 凸性 | convexity | |
| 绿豆凸 | see 綠豆椪|绿豆椪[lu:4 dou4 peng4] | |
| 凸面 | convex surface | |
| 凸出 | to protrude; to stick out | |
| 凸线 | convex curve | |
| 凹凸不平 | (idiom) uneven (surface); bumpy (road) | |
| 凸度 | convexity | |
| 凸起 | convex; protruding; to protrude; to bulge; to buckle upwards | |
| 前凸后翘 | (of a woman) to have nice curves; buxom; shapely | |
| 凸边 | rim; protruding edge | |
| 凸耳 | flange; lug | |
| 凸透镜 | convex lens | |
| 凸轮 | cam |