凸
tū HSK7

protrude

凸 tū
male adjective
referring to the projecting part of a joint or mechanical connector

这个零件的连接头是凸的，正好可以插进那个槽里。

zhè​ge líng​jiàn de lián​jié​tóu shì tū de, zhèng​hǎo kě​yǐ chā​jìn nà​gè cáo lǐ.

The connector of this part is convex, so it fits perfectly into that slot.

convex adjective
protruding or sticking out from a surface

他的眼睛有点向外凸。

tā de yǎn​jing yǒu​diǎn xiàng wài tū.

His eyes bulge out a bit.

Frequency
Character
Written text
2,857th most common 11.8 per million
Movie subtitles
3,243rd most common 2.33 per million appears in 1% of films
Word
Movie subtitles
1.19 per million appears in 1% of films
Written text
20.2 per million

Details
HSK 2.0
Level 6
HSK 3.0
Level 7
Strokes
5
Unicode
U+51F8

Sources
Definitions
CC-CEDICT
Frequency data
MTSU Chinese text computingSUBTLEX-CHBCC Corpus (BLCU)