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核 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
pitHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
stoneHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
nucleusHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
nuclearHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
to examineHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
to checkHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
to verifyHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
to investigateHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
core, kernel; nut, seed; atomHSK 7, n, 10 strokes, radical 木, rank #4604, Hard
(he2) T2
  1. 1pit
  2. 2stone
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026

(he2)

The character 核 (hé) primarily refers to a core or nucleus, often in the context of physical sciences, such as the nucleus of an atom or the pit of a fruit. It can also mean to examine or verify something, indicating a process of checking the core details of a matter. This word is versatile, used in both scientific and everyday contexts.

Strokes10RadicalFrequency#4604DifficultyHard
Cultural Note

In China, the term 核能 (nuclear energy) is significant in discussions about energy policy and development. The focus on核 technology reflects China's emphasis on modernizing its energy sources and reducing reliance on fossil fuels.

Memory Tip

Imagine a giant fruit with a shiny, hard pit inside. This pit represents the core (核) of the fruit, just like the nucleus in an atom. The pronunciation 'hé' sounds like 'her', so think of her checking the fruit for the pit inside to verify its quality.

Meanings of 核

(he2)
1pit
2stone
Exercise 1 of 2

Listen & Choose the Meaning

Choose the correct answer:

About 核

Simplified
10Strokes
Radical
名词míngcínoun (n.)Part of Speech
#4604Frequency Rank
HSK 3.0L7AdvancedBCTCEFRC2

Podcast: 核

JasonAmy

Podcast:

Listen to Jason & Amy break down this word for you

AI Study Notes for 核

Quick Contrast

核 (hé) vs 中心 (zhōngxīn) — use 核 for core or nucleus, while 中心 refers to a center or focal point.

Memory Mnemonic

Imagine a giant fruit with a shiny, hard pit inside. This pit represents the core (核) of the fruit, just like the nucleus in an atom. The pronunciation 'hé' sounds like 'her', so think of her checking the fruit for the pit inside to verify its quality.

Usage Notes

Learners often confuse 核 (hé) with 何 (hé), which means 'what'. It's also important to note that 核 can be used in both formal and informal contexts, especially in scientific discussions. Common collocations include 核能 (nuclear energy) and 核心 (core essence).

HSK Study Tips

Although 核 is not specifically listed in HSK levels, it can be relevant when studying vocabulary related to science and technology. Students should focus on recognizing its usage in context and connecting it with related terms like 核心 (core) and 核心价值 (core values).

Cultural Note

In China, the term 核能 (nuclear energy) is significant in discussions about energy policy and development. The focus on核 technology reflects China's emphasis on modernizing its energy sources and reducing reliance on fossil fuels.

Common Mistakes

Learners may incorrectly use 核 when referring to the concept of 'what' instead of the correct character 何 (hé). Additionally, some might confuse it with other characters that involve checking or examining, so it's essential to focus on the context of use.

AI-enhanced 2026-03-24

Pronunciation of 核

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Etymology of 核

Formation Typepictophonetic
六书 ClassificationPhono-semantic (形声字)~80-90% of characters
Explanation

Phonosemantic compound. 木 represents the meaning and 亥 represents the sound. Simplified form of 覈.

Memory Hint

tree

Semantic (meaning)
+
Phonetic (sound)
Learn more about Phono-semantic (形声字) characters
Exercise 1 of 1

Character Formation Type

What type of character formation is 核?

Decomposition of 核

IDS Structure⿰木亥
Full Character
=
Mu4
left
hai4
right
Exercise 1 of 2

Identify the Components

Which of these is a component of 核?

Write 核

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

Write correctly 3 times to earn XP

Grammar Patterns of 核

核 functions as a noun — it names a person, place, thing, or concept. Place it as a subject before the verb (主+谓) or as an object after the verb (谓+宾). Most Chinese nouns require a measure word between the number and the noun (e.g. 一个/三本). It carries 9 related meanings, each with its own usage notes below. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.

Exercise 1 of 4

Complete the Sentence

它的发电成本要比____电站低。

It will produce electricity more cheaply than a nuclear plant.

Common Confusions with 核

vs

Same pronunciation but different meaning.

Exercise 1 of 1

Spot the Difference

Which character means "pit"?

or

Example Sentences for 核 (10)

Listen to all sentences once to receive XP
1
它的发电成本要比核电站低。

tā de fā diàn chéng běn yào bǐ hé diàn zhàn dī。

It will produce electricity more cheaply than a nuclear plant.
2
你必须仔细检查并多方核对你所听到的每一件事。

nǐ bì xū zī xì jiǎn chá bìng duō fāng hé duì nǐ suǒ tīng dào de měi yī jiàn shì。

You have to scrupulously check and cross-check everything you hear.
3
全国的核武器工厂均受到了有毒废弃物的严重污染。

quán guó de hé wǔ qì gōng chǎng jūn shòu dào le yǒu dú fèi qì wù de yán zhòng wū rǎn。

Nuclear weapons plants across the country are heavily contaminated with toxic wastes.
4
去年11月,委员会核准了这宗交易。

qù nián11 11, yuè , wěi yuán huì hé zhǔn le zhè zōng。

Last November the commission gave its stamp of approval to the deal.
5
《编辑》杂志对于核对事实这一点采取无所谓的态度。

《 《 biān》 jí 》 zá zhì duì yú hé duì shì shí zhè yī diǎn cǎi qǔ wú suǒ wèi de。

The Editor takes a cavalier attitude to the concept of fact checking.
6
紧急冷却系统有可能失灵,核反应堆有可能发生堆芯熔毁。

jǐn jí lěng què xì tǒng yǒu kě néng shī líng, , hé fǎn yīng duī yǒu kě néng fā shēng duī xīn róng。

Emergency cooling systems could fail and a reactor meltdown could occur.
7
在以战争罪起诉这些人以前,官员们一直在等待他们身份的核实。

zài yǐ zhàn zhēng zuì qǐ sù zhè xiē rén yǐ qián, , guān yuán mén yī zhí zài děng dài tā mén shēn fèn de hé。

Officials are awaiting positive identification before charging the men with war crimes.
8
这可能会加剧爆发核战争的危险。

zhè kě néng huì jiā jù bào fā hé zhàn zhēng de wēi xiǎn。

This could intensify the risk of a nuclear exchange.
9
批评家们可能会认为小说的核心比喻过于简单。

pī píng jiā mén kě néng huì rèn wéi xiǎo shuō de hé xīn bǐ yù guò yú jiǎn dān。

Critics may complain that the novel's central conceit is rather simplistic.
10
我觉得有年龄限制,不过我得去核实一下。

wǒ jué dé yǒu nián líng xiàn zhì, , bù guò wǒ dé qù hé shí yī。

I think there is an age limit, but I'd have to check.

Cultural Notes for 核

🏮Cultural insight

In China, the term 核能 (nuclear energy) is significant in discussions about energy policy and development. The focus on核 technology reflects China's emphasis on modernizing its energy sources and reducing reliance on fossil fuels.

Word Family of 核

Words Containing This Character20
核心héxīncore
pit
核弹nuclear warhead核彈
考核kǎohéto examine
核武器héwǔqìnuclear weapon
审核shěnhéto audit審核
核实héshíto verify核實
核磁共振nuclear magnetic resonance (NMR)
核对héduìto check核對
核查to examine
核桃hétaowalnut
核算to calculate
核电站hédiànzhànnuclear power plant核電站
核准to authorize
核能hénéngnuclear energy
肺结核TB肺結核
核子nuclear
结核tuberculosis結核
核定to audit and determine
内核kernel (computer science)內核
Exercise 1 of 4

Compound Meaning

What does 核心 mean?

Frequently Asked Questions about 核

核 (hé) generally refers to a core or central part, often in a scientific context like 'nucleus,' while 中心 (zhōngxīn) means 'center' or 'middle' in a more general sense. 核 is used more in specific fields like physics or when discussing the core of something, whereas 中心 is broader, applicable to various contexts like places or concepts.