Definitions

to stick out; protruding; convex; male (connector etc); Taiwan pr. [tú]

Etymology

Pictograph of a bump sticking out. Opposite of .

About

The character 凸 is an ideographic symbol whose physical form directly depicts its meaning: a surface bulging upward. Unlike most Chinese characters, it lacks standard semantic or phonetic components, standing as a direct visual representation. It primarily denotes a raised area, serving as a descriptor for physical protrusions. Over time, 凸 was adopted into compound words related to elevation or prominence, finding technical uses in fields such as optics for convex lenses, geography for uneven terrain, and architecture for features that project from a flat plane.

Example Sentences Hide

这个按钮是的。

Zhège ànniǔ shì tū de.

This button is convex.

墙上出一块砖头。

Qiáng shàng tūchū yī kuài zhuāntou.

A brick protrudes from the wall.

不平的路面很难走。

Āotū bùpíng de lùmiàn hěn nán zǒu.

The uneven road surface is hard to walk on.

小心别撞到起的部分。

Xiǎoxīn bié zhuàng dào tūqǐ de bùfen.

Be careful not to bump into the protruding part.

这个透镜能聚焦光线。

Zhège tūtòujìng néng jùjiāo guāngxiàn.

This convex lens can focus light.

地图上起表示山脉。

Dìtú shàng tūqǐ biǎoshì shānmài.

On the map, protrusions represent mountain ranges.

现的问题需要尽快解决。

Tūxiàn de wèntí xūyào jǐnkuài jiějué.

The prominent problems need to be solved as soon as possible.

由于压力,金属板中间起了。

Yóuyú yālì, jīnshǔbǎn zhōngjiān tūqǐ le.

Due to pressure, the metal plate bulged in the middle.