髓 (suǐ): (bound form) bone marrow, (fig.) innermost part, (botany) pith

髓 (suǐ) is a Chinese character meaning “(bound form) bone marrow.” Classified as HSK Level 7-9 (HSK 3.0 Standard, CLEC 2022), it is composed of 骨 (semantic). It ranks #2635 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 髓 bone. Its radical form 骨 (bone) appears in many related characters such as 骨 (gǔ, bone).

Spoken pronunciation
HSK 7-9Radical: 骨 bone21 strokesFrequency #2635骨 semantic

Definitions

  1. (bound form) bone marrow
  2. (fig.) innermost part
  3. (botany) pith

Etymology & Origin

髓

pictophoneticbone

Components:骨semantic

Stroke Order

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

Practice writing 髓 with real-time feedback — trace each stroke in the correct order and build muscle memory in the HanziFeed app.

Words & Compounds

Common Compounds

WordPinyinMeaning
骨髓noungǔ suǐbone marrow
精髓nounjīng suǐmarrow
脊髓nounjǐ suǐspinal cord
脑髓nounnǎo suǐbrain tissue
脊髓炎nounjǐ suǐ yánmyelitis
牙髓nounyá suǐtooth pulp
延髓nounyán suǐ(anatomy) medulla oblongata
骨髓增生异常综合征noungǔ suǐ zēng shēng yì cháng zōng hé zhēngmyelodysplastic syndrome (MDS)
多发性骨髓瘤nounduō fā xìng gǔ suǐ liú(medicine) multiple myeloma
髓过氧化物酶suǐ guò yǎng huà wù méimyeloperoxidase (aka MPO) (molecular biology)
真髓zhēn suǐessence
红骨髓hóng gǔ suǐred bone marrow
髓结suǐ jiépith knot (in timber)
神髓shén suǐlit. spirit and marrow
黄骨髓huáng gǔ suǐyellow bone marrow
26
Total compounds
15
As first character
58
As last character
27
As middle character

髓 appears in 26 compound words: 15 as the first character, 58 as the last, and 27 in a middle position. Compound statistics computed from SUBTLEX-CH and HSK 3.0 vocabulary data.

Strongest Collocations

Characters that most frequently co-occur with 髓 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

脊jǐ
0.7193,547 co-occurrences
骨gǔ
0.5503,516 co-occurrences
炎yán
0.520964 co-occurrences
瘤liú
0.514462 co-occurrences
灰huī
0.475626 co-occurrences
精jīng
0.4671,446 co-occurrences
肾shèn
0.43166 co-occurrences
腺xiàn
0.430150 co-occurrences
脑nǎo
0.429234 co-occurrences
液yè
0.424285 co-occurrences

Idioms & Chengyu (2)

骨髓移植gǔsuǐ yízhíHSK 7+

bone marrow transplantation

noun
沦肌浃髓lún jī jiā suǐ

lit. penetrate to the marrow (idiom); deeply affected; moved to the core

phrase

Example Sentences

AI-Generated

这个髓字在古汉语中有不同的含义。

zhè gě suǐ zì zài gǔ hàn yǔ zhōng yǒu bù tóng de hán yì .

The character "髓" had different meanings in ancient Chinese.

99 健康网Apr 2026

渐冻症是什么病是啥原因引起的?脑和脊髓运动细胞变性

jiān dòng zhèng shì shén má bìng shì 啥 yuán yīn yǐn qǐ de ? nǎo hé jǐ suǐ yùn dòng xì bāo biàn xìng

What is ALS, and what causes it? Degeneration of motor neurons in the brain and spinal cord

Fx168 Finance NetworkMar 2026

...6注射液获临床试验批准,用于治疗多发性骨髓瘤-FX168

. . . 6 zhù shè yè huò lín chuáng shì yàn pī zhǔn , yòng yú zhì liáo duō fā xìng gǔ suǐ liú F X 1 6 8

...6 Injection has received approval for clinical trials for the treatment of multiple myeloma—FX168

99 健康网Mar 2026

...不起是什么原因引起的呢?多发性硬化损伤脊髓传导通路吗

. . . bù qǐ shì shén má yuán yīn yǐn qǐ de ne ? duō fā xìng yìng huà sǔn shāng jǐ suǐ chuán dǎo tōng lù ma

... What causes the insignia? Does multiple sclerosis damage spinal cord conduction pathways?

UdnnewsindexFeb 2026

...题一定要落落长?专家:老师没有掌握命题精髓

. . . tí yī dìng yāo luò luò cháng ? zhuān jiā : lǎo shī méi yǒu zhǎng wò mìng tí jīng suǐ

... The question must be long? Expert: The teacher has not grasped the essence of the proposition

Yahoo FinanceFeb 2026

...饮掀倒闭潮 早年越洋落户港厨 依仗粤菜神髓守业

. . . yǐn xiān dǎo bì cháo zǎo nián yuè yáng luò hù gǎng chú yī zhàng yuè cài shén suǐ shǒu yè

... In the early years, he crossed the ocean to settle in Hong Kong kitchens and relied on the essence of Cantonese cuisine to keep his business

Tatoeba

太可惜了,你一点也不懂它的精髓。

Tài kěxī le, nǐ yīdiǎn yě bù dǒng tā de jīngsuǐ.

It's really unfortunate. You don't understand at all its essence.

Tatoeba

个人自由是民主的精髓。

Gèrén zìyóu shì mínzhǔ de jīngsuǐ.

Individual freedom is the soul of democracy.

Character Family

Semantic Family — Characters sharing the 骨 (bone) component

骨 Radical Family — Characters sharing the bone radical

Related Characters

Homophones — Characters pronounced suǐ

Frequently Asked Questions

What does 髓 (suǐ) mean in Chinese?
髓 (suǐ) primarily means "(bound form) bone marrow." It is classified as HSK Level 7-9, making it an expert-level character. It ranks #2635 in character frequency.
How many strokes does 髓 have?
髓 is written with 21 strokes. The correct stroke order matters for recognition and handwriting speed — practice with the animated guide above to build proper technique.
What is the radical of 髓?
The radical associated with 髓 is 骨 (bone). This radical appears in many characters related to bone.
What are the components of 髓?
髓 is composed of: 骨 (semantic). Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 髓?
Common words with 髓 include: 骨髓 (gǔ suǐ, "bone marrow"); 精髓 (jīng suǐ, "marrow"); 脊髓 (jǐ suǐ, "spinal cord"); 脑髓 (nǎo suǐ, "brain tissue"); 脊髓炎 (jǐ suǐ yán, "myelitis"). There are over 26 compound words containing this character.
What characters sound the same as 髓 (suǐ)?
Several characters share the pronunciation suǐ: 随 (to follow), 虽 (although), 岁 (years old), 碎 (broken), and 2 more. Context and tones help distinguish between them in speech and writing.
Is 髓 the same in simplified and traditional Chinese?
Yes, 髓 is written the same way in both simplified and traditional Chinese.

Practice writing 髓 with real-time feedback

Trace stroke sequences, hear spoken pronunciation, and build lasting retention with spaced repetition in the HanziFeed app.

Character data sourced from Unihan (Unicode Consortium), SUBTLEX-CH frequency corpus (Cai & Brysbaert, 2010), and Make Me a Hanzi (stroke data). Collocation strength measured via NPMI (Normalized Pointwise Mutual Information). Verified by the HanziFeed linguistics team.

HSK classification follows the HSK 3.0 Standard (Center for Language Education and Cooperation, CLEC, 2022 revision). Idiom data from Wiktionary (CC BY-SA 3.0).

Data last verified: March 2026.