凸

tū

HSK 3.0 Level 7 Adjective Uncommon

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Definitions

1. to stick out
2. protruding
3. convex
4. male (connector etc)
5. Taiwan pr. [tú]

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Character focus

Stroke order

5 strokes

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Word relationships

Antonyms

1 item

• 凹 āo 凹 āo depressed 凸 means convex or protruding; 凹 means concave.: depressed

Related words

1 item

• 公 gōng 公 gōng public 公 is used for male connectors, similar to 凸 for plugs and connectors.: public

Synonyms

2 items

• 突出 tū chū 突出 tū chū prominent Both can mean protruding, but 突出 is more abstract for 'outstanding' as well.: prominent
• 隆起 lóng qǐ 隆起 lóng qǐ to swell; to bulge 隆起 means to bulge or swell, similar physical protrusion.: to swell; to bulge

Usage notes

Collocations

凸 often pairs with 凹 (concave) in descriptions of shapes or connectors; common collocation: 凹凸不平 (bumpy/uneven).

Common mistakes

Don't confuse 凸 (tū) with 突 (tū) when meaning 'protruding'—凸 is more concrete for shapes, while 突 means 'sudden' or 'charge' in other contexts.

Example Sentences

1 shown

这个盖子是 凸 的。

This lid is convex.

AI-generated examples are marked with this icon.

Words Containing 凸

• 凸显 凸显 tū xiǎn: to present clearly
• 凹凸 凹凸 āo tū: concave or convex
• 凸凸 凸凸 tū tū: convex on both sides (of lens)
• 凸出 凸出 tū chū: to protrude
• 凸多胞形 凸多胞形 tū duō bāo xíng: convex polytope
• 凸多边形 凸多边形 tū duō biān xíng: convex polygon
• 凸多面体 凸多面体 tū duō miàn tǐ: convex polyhedron
• 凸度 凸度 tū dù: convexity
• 凸性 凸性 tū xìng: convexity
• 凸折线 凸折线 tū zhé xiàn: convex polygonal line
• 凸版 凸版 tū bǎn: relief printing plate
• 凸版印刷 凸版印刷 tū bǎn yìn shuā: relief printing
• 凸现 凸现 tū xiàn: to come to prominence
• 凸线 凸线 tū xiàn: convex curve
• 凸缘 凸缘 tū yuán: flange
• 凸耳 凸耳 tū ěr: flange
• 凸起 凸起 tū qǐ: convex
• 凸轮 凸轮 tū lún: cam
• 凸轮轴 凸轮轴 tū lún zhóu: camshaft
• 凸透镜 凸透镜 tū tòu jìng: convex lens
• 凸边 凸边 tū biān: rim
• 凸镜 凸镜 tū jìng: convex mirror
• 凸面 凸面 tū miàn: convex surface
• 凸面镜 凸面镜 tū miàn jìng: convex mirror
• 凸面体 凸面体 tū miàn tǐ: convex body
• 凹凸不平 凹凸不平 āo tū bù píng: uneven (surface)
• 凹凸印刷 凹凸印刷 āo tū yìn shuā: embossing
• 凹凸形 凹凸形 āo tū xíng: crenelated
• 凹凸性 凹凸性 āo tū xìng: concavity (math.)
• 凹凸轧花 凹凸轧花 āo tū yà huā: embossing
• 盈凸月 盈凸月 yíng tū yuè: full moon
• 绿豆凸 绿豆凸 lǜ dòu tū: see 綠豆椪|绿豆椪[lu:4 dòu pèng]
• 脊柱侧凸 脊柱侧凸 jǐ zhù cè tū: scoliosis
• 双凸面 双凸面 shuāng tū miàn: convex on both sides (of lens)