凸 meaning and stroke order
To stick out; protruding; convex; male (connector etc); Taiwan pr. [tu2]
How to write 凸, stroke by stroke
5 strokes in order. Each box adds the next stroke in red. Write top to bottom and left to right, and finish enclosing strokes last.
- 1
- 2
- 3
- 4
- 5
Meaning of 凸
Definitions from CC-CEDICT, grouped by pronunciation.
- to stick out; protruding; convex; male (connector etc)
- Taiwan pr. [tu2]
How 凸 is built
Ideographic (compound meaning) character. A rectangle with a bulge.
Radical: 凵 (container), shared by 8 characters on this site.
How to remember 凸
凸 (tū) is a picture: a flat base with a block sticking up in the middle, like a shape with a bulge. Think of it as a bump rising out of a flat surface.
凸 (tū) describes things that stick out or are convex, as in 凸透镜 (tūtòujìng, convex lens). It also appears in more abstract words like 凸显 (tūxiǎn), to make something stand out. Example: 这个问题凸显了沟通的重要性。 (Zhège wèntí tūxiǎn le gōutōng de zhòngyàoxìng.) This problem highlights the importance of communication.
Common mistake: Learners often mix up 凸 (tū, convex) with its mirror partner 凹 (āo, concave), which has a dip in the middle instead of a bump. Remember that 凸 points up and out, while 凹 caves in.
Common words with 凸
Ordered by HSK level, then by how often they appear in everyday Chinese.
| Word | Pinyin | Meaning | Level |
|---|---|---|---|
| 凸显 | tūxiǎn | to stand out clearly; to make prominent | HSK 7-9 |
| 凸轮 | tūlún | cam |
凸 in example sentences
Real sentences from the Tatoeba project, with pinyin and English.
Questions about 凸
How many strokes are in 凸?
凸 is written with 5 strokes. The diagrams on this page number every stroke in the order it is written, with the new stroke shown in red.
What does 凸 mean?
凸 (tū) means to stick out; protruding; convex; male (connector etc); Taiwan pr. [tu2]. A common word with it is 凸显 (tūxiǎn), meaning "to stand out clearly; to make prominent".
How do you pronounce 凸?
凸 is pronounced tū, in the first tone (high and level).
What is the radical of 凸?
The radical of 凸 is 凵, which carries the idea of "container". Dictionaries list 凸 under this radical.
Is 凸 on the HSK exam?
Yes. 凸 is part of the HSK 7-9 character list in the HSK 3.0 standard.
What does 凹凸 mean?
凹凸 (āotū) means uneven or bumpy, describing a surface with both dents and bumps. For example, 凹凸不平 (āotū bù píng) means rough and uneven, like a bad road.
Is 凸 pronounced tū or tú?
In mainland Mandarin it is first tone, tū. In Taiwan it is often pronounced with second tone, tú.