Skip to content
Stroke order, etymology and audio for every word.Start learning
真空 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
真空zhēnkōngvacuumHSK 7, unknown, 18 strokes, rank #13937, Very Hard
zhēnkōng(zhen1kong1)zhen kong T1
  1. 1vacuum
Listen to the audio pronunciation 3 times to gain XP
March 24, 2026

真空zhēnkōng(zhen1kong1)

真空 (zhēn kōng) refers to a space that is devoid of matter, commonly known as a vacuum. It is used in scientific contexts, especially in physics and engineering, to describe areas where air and other particles are absent, creating an environment with no pressure.

Strokes18Frequency#13937DifficultyVery Hard
Cultural note

In Chinese science and technology discussions, 真空 is frequently referenced in the context of space exploration and advanced engineering, reflecting China's growing focus on these fields in recent years.

Memory tip

Imagine a 'true' (真, zhēn) 'sky' (空, kōng) where there is absolutely nothing—no stars, no air, just emptiness. The visual contrast helps you remember that 真空 means vacuum, representing a space with nothing in it.

Meanings of 真空

zhēnkōng(zhen1kong1)
1vacuum
Exercise 1 of 2

By ear

Play it, then pick what 真空 means.

About 真空

真空Simplified
18Strokes
—Radical
名词míngcínoun (n.)Part of Speech
#—Frequency Rank
HSK 3.0L7AdvancedCEFRC2

Podcast: 真空

JasonAmy

Podcast: 真空

Listen to Jason & Amy break down this word for you

AI study notes for 真空

Usage Notes

Be cautious not to confuse 真空 with 空气 (kōngqì), which means air. 真空 is often used in technical or scientific discussions, so it's more formal than colloquial terms. Remember to use the correct tone for both characters to avoid misunderstandings.

HSK Study Tips

While 真空 is not listed in the official HSK vocabulary, it can be useful for learners at HSK 4 and above who are studying science-related topics. Focus on understanding the components: 真 (true) and 空 (empty) to grasp its meaning better.

Common Mistakes

Learners often mistakenly use the term in a non-scientific context, such as saying '我在真空' (I am in a vacuum) to describe an empty room. The correct expression would involve a more metaphorical term for emptiness.

AI-enhanced 2026-03-24

Pronunciation of 真空

Premium — Locked

Tone practice

Pro

Drill the tone of 真空, say it back, see your pitch against the model voice, and earn XP towards mastery. Interactive tone practice is part of Pro.

Tone drillsPitch drawing+5 XP
Get Pro to unlock

Jason Explains 真空 to you

Let me explain 真空 for you

Make it yours

Jason looks at what you watch and listen to, the checkpoints you have cleared, our lessons and what you have been exploring, and explains 真空 through them.

Sign in free to make it personal. New accounts start with 200 AI credits.

How well do you know 真空?

Example

Learning Lab

Knowing 真空 is seven skills, not one.

Its meaning, its character, its pinyin, its tone — hearing it, saying it, writing it. The Learning Lab measures each one from your own practice, on every word you study, so you see what you actually know rather than how much you have done.

  • MeaningFree
  • CharacterFree
  • PinyinFree
  • TonePro
  • ListeningPro
  • SpeakingPro
  • WritingPro
See the Learning Lab Three facets free · no card needed

Component characters

真zhēnreally
HSK 110 strokes目
View full entry
空kōngempty
HSK 48 strokes穴
View full entry

How to say vacuum in Chinese

“vacuum” in Chinese is真空zhēnkōng

真空 (zhēn kōng) refers to a space that is devoid of matter, commonly known as a vacuum. It is used in scientific contexts, especially in physics and engineering, to describe areas where air and other particles are absent, creating an environment with no pressure.

When to use 真空

Be cautious not to confuse 真空 with 空气 (kōngqì), which means air. 真空 is often used in technical or scientific discussions, so it's more formal than colloquial terms. Remember to use the correct tone for both characters to avoid misunderstandings.

What learners get wrong

Learners often mistakenly use the term in a non-scientific context, such as saying '我在真空' (I am in a vacuum) to describe an empty room. The correct expression would involve a more metaphorical term for emptiness.

Write 真空

真
空

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

Write correctly 3 times to earn XP

Ask Jason

Have a question about 真空?

Jason answers about this word at your level: example sentences, how it differs from similar words, and a way to remember it.

Sign in free to ask. New accounts start with 200 AI credits.

Frequently asked questions about 真空

It is pronounced as 'zhēn kōng', with the first tone on 真 and the first tone on 空.

Jason Recommends

Not sure what to learn after 真空?

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.

A sample week, replayed. Every page you study lands here in the order you did it — your own replay starts with a free account.

See the Learning Lab