滤 (lǜ): to strain, to filter

滤 (lǜ) is a Chinese character meaning “to strain.” Classified as HSK Level 7-9 (HSK 3.0 Standard, CLEC 2022), it is composed of 氵 (semantic) and 虑 (phonetic). It ranks #2853 in character frequency (SUBTLEX-CH corpus).

Etymologically derived, 滤 water. Its radical form 氵 (water) appears in many related characters such as 水 (shuǐ, water), 汉 (hàn, Han ethnic group), 汽 (qì, steam).

Spoken pronunciation

Definitions

  1. to strain
  2. to filter

Etymology & Origin

滤

pictophoneticwater

Decomposition: ⿰氵虑 (layout: left-right)

Stroke Order

1
2
3
4
5
6
7
8
9
10
11
12
13

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

Words & Compounds

Common Compounds

WordPinyinMeaning
过滤verbguò lǜto filter
过滤器nounguò lǜ qìfiltering apparatus
滤波器nounlǜ bō qìsignal filter
过滤嘴nounguò lǜ zuǐcigarette filter
滤器nounlǜ qìfilter
滤纸nounlǜ zhǐfilter paper
滤毒通风装置lǜ dú tōng fēng zhuāng zhìfiltration equipment
滤清器nounlǜ qīng qìa filter
滤出lǜ chūto filter out
滤过verblǜ guòto filter
滤光镜lǜ guāng jìng(photography) filter
滤色镜lǜ sè jìngcolor filter
滤清verblǜ qīngto filter and purify
滤除lǜ chúto filter out
滤尘器lǜ chén qìdust filter
29
Total compounds
83
As first character
7
As last character
10
As middle character

滤 appears in 29 compound words: 83 as the first character, 7 as the last, and 10 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 滤 in natural Chinese text, ranked by NPMI (Normalized Pointwise Mutual Information) — a statistical measure of association strength.

器qì
0.5314,282 co-occurrences
镜jìng
0.529960 co-occurrences
波bō
0.5123,092 co-occurrences
过guò
0.4826,240 co-occurrences
泡pào
0.466354 co-occurrences
涤dí
0.43934 co-occurrences
芯xīn
0.430146 co-occurrences
肾shèn
0.41456 co-occurrences
纸zhǐ
0.414214 co-occurrences
渗shèn
0.40350 co-occurrences

Example Sentences

AI-Generated

站在桥上望去,滤水缓缓向东流去。

zhàn zài qiáo shǎng wàng qù , lǜ shuǐ huǎn huǎn xiàng dōng liú qù .

Standing on the bridge, one could see the water filtering through and flowing slowly eastward.

三立新聞網Mar 2026

旭然握滤材设备商机 EPS0.92创五年新高

xù rán wò lǜ cái shè bèi shāng jī E P S 0 . 9 2 chuàng wǔ nián xīn gāo

Xuran Seizes Opportunities in the Filter Media Equipment Market; EPS Hits Five-Year High at 0.92

東方日報Mar 2026

菊梓乔性感晒线 讲明唔怕出滤镜片

jú 梓 qiáo xìng gǎn shài xiàn jiǎng míng 唔 pà chū lǜ jìng piàn

Juzhiqiao Shows Off Her Toned Abs, Saying She’s Not Afraid to Go Filter-Free

PcmMar 2026

... 显示卡率先有得用 DLSS 5 AI 滤镜抹煞原作艺术风格?

. . . xiǎn shì kǎ lǜ xiān yǒu dé yòng D L S S 5 A I lǜ jìng mā 煞 yuán zuò yì shù fēng gé ?

... Will graphics cards be the first to use DLSS 5 AI filters to erase the original artwork's artistic style?

BusinesswireFeb 2026

...alTM:开创公路及非公路重型设备空气过滤技术的新纪元

. . . a l T M : kāi chuàng gōng lù jí fēi gōng lù chóng xíng shè bèi kōng qì guò lǜ jì shù de xīn jì yuán

... alTM: Pioneering a new era of air filtration technology for on-highway and off-highway heavy equipment

Tatoeba

我从不过滤咖啡。

Wǒ cóngbù guòlǜ kāfēi.

I never filter my coffee.

Character Family

Semantic Family — Characters sharing the 氵 (water) component

Homophones — Characters pronounced lǜ

Frequently Asked Questions

What does 滤 (lǜ) mean in Chinese?
滤 (lǜ) primarily means "to strain." It is classified as HSK Level 7-9, making it an expert-level character. It ranks #2853 in character frequency.
How many strokes does 滤 have?
滤 is written with 13 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 滤?
The radical associated with 滤 is 氵 (water). This radical appears in many characters related to water.
What are the components of 滤?
滤 is composed of: 氵 (semantic), 虑 (phonetic). Its IDS decomposition is ⿰氵虑 with a left-right layout. Understanding the components helps with both memorization and recognizing related characters.
What are common words containing 滤?
Common words with 滤 include: 过滤 (guò lǜ, "to filter"); 过滤器 (guò lǜ qì, "filtering apparatus"); 滤波器 (lǜ bō qì, "signal filter"); 过滤嘴 (guò lǜ zuǐ, "cigarette filter"); 滤器 (lǜ qì, "filter"). There are over 29 compound words containing this character.
What characters sound the same as 滤 (lǜ)?
Several characters share the pronunciation lǜ: 律 (law), 率 ((bound form) ratio), 虑 (to think over), 旅 (trip), and 1 more. Context and tones help distinguish between them in speech and writing.
Is 滤 the same in simplified and traditional Chinese?
Yes, 滤 is written the same way in both simplified and traditional Chinese.

Practice writing 滤 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.