Skip to content
Start your Chinese Learning JourneyStart Now
齒 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
齒chǐteeth; gears, cogs; agex, 15 strokes, radical 齒, rank #47611, Very Hard
chǐ(chi3) T3
  1. 1teeth; gears, cogs; age
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026

齒chǐ(chi3)

The character 齒 (chǐ) primarily means 'teeth' and can also refer to the 'cogs' or 'gears' in machinery. In certain contexts, it can denote age, particularly in idiomatic expressions related to wisdom or experience, such as '齒白' (chǐ bái), meaning 'tooth white,' which metaphorically refers to a person being wise or learned.

Strokes15Radical齒Frequency#47611DifficultyVery Hard
Cultural Note

In traditional Chinese medicine, teeth are believed to be connected to kidney health, reflecting the broader cultural significance of physical health and age. This ties into idiomatic expressions where teeth symbolize wisdom and experience.

Memory Tip

Imagine a giant tooth (齒) with gears (齒) inside it, turning as it ages. The character itself has a radical that resembles teeth (the lower part) and looks like it’s grinning, reminding you of a smile that reveals teeth.

Meanings of 齒

chǐ(chi3)
1teeth; gears, cogs; age
Exercise 1 of 2

Listen & Choose the Meaning

Choose the correct answer:

About 齒

齒Simplified
15Strokes
齒Radical
非语素字non-morpheme character (n-m.)Part of Speech
#—Frequency Rank

Podcast: 齒

JasonAmy

Podcast: 齒

Listen to Jason & Amy break down this word for you

AI Study Notes for 齒

Usage Notes

When using 齒 to refer to age, it's often found in formal contexts or literature. Common mistakes include confusing its meaning with other characters related to body parts, such as 牙 (yá), which specifically means 'tooth.' Pay attention to the third tone in pronunciation, as it can change the meaning.

HSK Study Tips

Although 齒 is not part of the official HSK vocabulary lists, it shares components with other HSK words related to health or body parts. Focus on how it connects to words like 牙 (yá) and understand the context in which it is used to describe machinery.

Common Mistakes

Learners often confuse 齒 with 牙 (yá) and use them interchangeably, leading to phrases like '我有五个齒' instead of '我有五个牙' (I have five teeth). Remember that 齒 is more formal and has broader meanings.

AI-enhanced 2026-03-24

Pronunciation of 齒

Premium — Locked

AI tone practice

Pro

Drill the tone of 齒 with AI-powered exercises, get instant feedback, and earn XP toward mastery. Interactive tone practice is part of Pro.

Tone drillsInstant feedback+5 XP
See plans to unlock

Etymology of 齒

Formation TypePictographic 象形
六书 ClassificationPictograph (象形字)~4% of characters
Explanation

Simplified form of 齒. Pictograph of a mouth full of teeth. The sound component 止 was added later.

Memory Hint

Upper and lower teeth 从; 止 provides the pronunciation

Learn more about Pictograph (象形字) characters

Jason Etymology Detective

Case file: 齒

Simplified form of 齒. Pictograph of a mouth full of teeth. The sound component 止 was added later.

  1. 1The giveawayUpper and lower teeth 从; 止 provides the pronunciation
  2. 2On the record aspictographic — someone drew the thing itself.

Every clue here comes from the character's recorded structure — nothing is guessed.

Want the full history of 齒? Jason searches the paleographic record, weighs the competing accounts and judges the popular story.

Charged once for this character — everyone reads it afterwards.
Exercise 1 of 1

Character Formation Type

What type of character formation is 齒?

Decomposition of 齒

IDS Structure⿱止⿶凵⿳从一从
齒Full Character
=
止zhi3
top
凵qian3
enclosing
从Cong2
top
一yi1
middle
从Cong2
bottom
Exercise 1 of 3

Identify the Components

Which of these is a component of 齒?

How to say teeth; gears, cogs; age in Chinese

“teeth; gears, cogs; age” in Chinese is齒chǐ

The character 齒 (chǐ) primarily means 'teeth' and can also refer to the 'cogs' or 'gears' in machinery. In certain contexts, it can denote age, particularly in idiomatic expressions related to wisdom or experience, such as '齒白' (chǐ bái), meaning 'tooth white,' which metaphorically refers to a person being wise or learned.

When to use 齒

When using 齒 to refer to age, it's often found in formal contexts or literature. Common mistakes include confusing its meaning with other characters related to body parts, such as 牙 (yá), which specifically means 'tooth.' Pay attention to the third tone in pronunciation, as it can change the meaning.

What learners get wrong

Learners often confuse 齒 with 牙 (yá) and use them interchangeably, leading to phrases like '我有五个齒' instead of '我有五个牙' (I have five teeth). Remember that 齒 is more formal and has broader meanings.

Write 齒

齒

Practice writing 齒 stroke by stroke. Watch the animation to learn the stroke order, then try writing it yourself.

Write correctly 3 times to earn XP

Word Family of 齒

Words Containing This Character20
牙齿yáchǐtooth牙齒
齿chǐtooth齒
齿轮(machine) gear齒輪
锯齿sawtooth鋸齒
咬牙切齿fuming with rage between gritted teeth咬牙切齒
难以启齿to find it hard to speak about sth難以啟齒
口齿mouth and teeth口齒
龋齿tooth decay齲齒
不齿to despise不齒
智齿wisdom tooth智齒
启齿to open one's mouth啟齒
伶牙俐齿having the gift of the gab伶牙俐齒
臼齿molar tooth臼齒
犬齿canine tooth犬齒
唇齿interdependent唇齒
义齿artificial tooth義齒
唇齿相依interdependent唇齒相依
切齿to gnash one's teeth (in anger)切齒
剑齿虎saber-toothed tiger劍齒虎
马齿苋Portulaca oleracea (common purslane)馬齒莧
Exercise 1 of 4

Compound Meaning

What does 牙齿 mean?

Frequently Asked Questions about 齒

It is pronounced as chǐ, with a third tone, which means the pitch should dip and then rise.

Jason Recommends

Not sure what to learn after 齒?

Jason picks three words from your level and explains why each one is worth your time next. It takes a free account so he knows what you already know.