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醛 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
quánaldehyden, 16 strokes, radical 酉, rank #48315, Very Hard
quán(quan2) T2
  1. 1aldehyde
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026
quán(quan2)

醛 (quán) refers to a class of organic compounds known as aldehydes, characterized by the presence of a carbonyl group (C=O) at the end of a carbon chain. They are commonly used in chemical synthesis and can be found in various fragrances and flavors. In a laboratory context, understanding aldehydes is essential for organic chemistry.

Strokes16RadicalFrequency#48315DifficultyVery Hard
Cultural Note

In traditional Chinese medicine, the understanding of chemical compounds, including aldehydes, is relevant in the context of herbal preparations, which sometimes utilize aromatic compounds for therapeutic benefits.

Memory Tip

Think of 醛 as a 'quaint' compound that smells sweet and is often found in perfumes. The character contains the radical 酉 (yǒu), which relates to wine and fermentation, suggesting its presence in aromatic substances. Imagine a quaint little shop full of fragrant aldehydes.

Meanings of 醛

quán(quan2)
1aldehyde
Exercise 1 of 2

Listen & Choose the Meaning

Choose the correct answer:

About 醛

Simplified
16Strokes
Radical
名词míngcínoun (n.)Part of Speech
#—Frequency Rank

Podcast: 醛

JasonAmy

Podcast:

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AI Study Notes for 醛

Memory Mnemonic

Think of 醛 as a 'quaint' compound that smells sweet and is often found in perfumes. The character contains the radical 酉 (yǒu), which relates to wine and fermentation, suggesting its presence in aromatic substances. Imagine a quaint little shop full of fragrant aldehydes.

Usage Notes

While 醛 is a technical term primarily used in chemistry, it’s important to use it in contexts related to organic compounds. Learners should be careful not to confuse it with related terms like 酮 (tóng, ketone) and ensure they are familiar with chemical terminology. This term is formal and typically appears in academic or scientific discussions.

HSK Study Tips

As a term not included in the HSK levels, learners should focus on understanding its application within organic chemistry. It connects with other scientific vocabulary, so mastering related terms will be beneficial for students pursuing further studies in science.

Cultural Note

In traditional Chinese medicine, the understanding of chemical compounds, including aldehydes, is relevant in the context of herbal preparations, which sometimes utilize aromatic compounds for therapeutic benefits.

Common Mistakes

Learners often confuse 醛 with similar-sounding terms like 圆 (yuán, circle) or 传 (chuán, to transmit). It’s essential to practice pronunciation and write the character correctly to avoid these mix-ups.

AI-enhanced 2026-03-24

Pronunciation of 醛

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Etymology of 醛

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

Phonosemantic compound. 酉 represents the meaning and 荃 represents the sound.

Memory Hint

chemical

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 醛?

Decomposition of 醛

IDS Structure⿰酉荃
Full Character
=
you3
left
quan2
right
Exercise 1 of 2

Identify the Components

Which of these is a component of 醛?

Write 醛

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

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Grammar Patterns of 醛

醛 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). The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.

Exercise 1 of 3

Complete the Sentence

乙____酸循环体发现于油脂种子的贮藏组织中.

Glyoxysomes are found in the storage tissues of fatty seeds.

Example Sentences for 醛 (3)

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1
乙醛酸循环体发现于油脂种子的贮藏组织中.

yǐ quán suān xún huán tǐ fā xiàn yú yóu zhī zhǒng zǐ de zhù cáng zǔ zhī zhōng.

Glyoxysomes are found in the storage tissues of fatty seeds.
2
某种蟑螂喷射一种催泪性毒气――乙 基丙烯 醛.

mǒu zhǒng zhāng láng pēn shè yī zhǒng cuī lèi xìng dú qì―― ―― yǐ jī bǐng.

A species of cockroach sprays a substance , ethylacrolein, that is a kind of tear gas.
3
以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.

yǐ fēi zhì zǐ suān lǜ huà yà xī wéi cuī huà jì, , cuī huà hé chéng le dīng-1,2- quán -1,2- bǐng èr chún.

Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.

Cultural Notes for 醛

🏮Cultural insight

In traditional Chinese medicine, the understanding of chemical compounds, including aldehydes, is relevant in the context of herbal preparations, which sometimes utilize aromatic compounds for therapeutic benefits.

Word Family of 醛

Words Containing This Character14
甲醛formaldehyde (HCHO)
quánaldehyde
醛固酮aldosterone
乙醛ethanal
聚甲醛polyformaldehyde (CH2O)n
酚醛phenolic aldehyde
糠醛furfural (chemistry)
醛糖aldose, monosaccharide containing aldehyde group -COH
苯甲醛benzaldehyde C6H5CHO, the simplest aromatic aldehyde
醛基aldehyde group -COH
丙烯醛acrolein CH2CHCHO
甘油醛glyceraldehyde (CH2O)3
丁醛butanal
丙醛propionaldehyde
Exercise 1 of 4

Compound Meaning

What does 甲醛 mean?

Frequently Asked Questions about 醛

醛 (quán) refers to aldehydes, which have a carbonyl group at the end of a carbon chain, while 酮 (tóng) refers to ketones, which have a carbonyl group within the carbon chain.