脈 — Pulse, Vein, Current

Meaning

The kanji 脈 (myaku) is a diverse character, primarily meaning 'pulse,' 'vein,' or 'blood vessel.' Beyond its physiological uses, it also refers to a 'current,' 'flow,' 'lineage,' or even 'context' and 'connection' in a more abstract sense. It conveys the idea of something continuous, like blood flowing through the body or a theme running through a story, that connects different elements.

This kanji is a phono-semantic compound (形声文字, keisei moji), a common way kanji are formed. On the left side, you'll find the radical ⺼ (にくづき, nikuzuki), which is a variant of 肉 (にく, niku), meaning 'flesh' or 'body.' This component clearly indicates that the kanji relates to anatomy or organic matter. On the right is 永 (エイ, ei), meaning 'long' or 'eternal,' which also visually depicts flowing water. While 永 mainly functions as the phonetic component, influencing the pronunciation towards 'myaku' (with a sound shift over time), its meaning of 'flow' or 'continuity' perfectly aligns with the kanji's overall sense. Thus, 脈 can be thought of as the 'long, continuous flow within the flesh.'

Visually, 脈 is made up of 10 strokes. The left 'flesh' radical anchors it to the physical body, while the dynamic strokes of 永 evoke the constant, rhythmic movement of life. This visual combination effectively represents a heartbeat, a flowing river, or an unbroken chain of connection. 脈 is a Joyo Kanji (常用漢字), meaning it's designated for common use in Japan. Students typically encounter and learn it in junior high school (中学校, chūgakkō) as part of the advanced curriculum.

Readings

On'yomi (音読み) — Chinese-derived readings

The primary and almost exclusive On'yomi reading for 脈 is ミャク (Myaku). This reading comes from ancient Chinese pronunciation and is predominantly used in compound words, reflecting its specialized and often abstract meanings.

• 脈拍みゃくはく (myakuhaku) — This refers to the 'pulse (beat)' of the heart, the rhythmic throbbing felt in arteries. For instance, an ambulance crew might check a patient's 脈拍みゃくはく to assess their condition.
• 動脈どうみゃく (dōmyaku) — Meaning 'artery,' these are the vital blood vessels that carry oxygenated blood away from the heart to the rest of the body. Understanding the human 動脈どうみゃく system is essential in biology.
• 静脈じょうみゃく (jōmyaku) — This means 'vein,' the blood vessels that return deoxygenated blood back to the heart. 静脈じょうみゃく often appear somewhat blue under the skin.
• 文脈ぶんみゃく (bunmyaku) — Meaning 'context,' this extends the idea of a 'flow' or 'connection' to linguistic or situational understanding, referring to the surrounding text or circumstances that give meaning to something. To fully grasp a statement, one must consider its 文脈ぶんみゃく.
• 山脈さんみゃく (sanmyaku) — This refers to a 'mountain range,' visualizing a continuous line or chain of mountains stretching across a landscape. The majestic Alps are a famous 山脈さんみゃく.

Kun'yomi (訓読み) — Native Japanese readings

Unlike many kanji, 脈 does not have a commonly used native Japanese (訓読み, kun'yomi) reading. Its use in Japanese is almost entirely limited to On'yomi compounds, reflecting its more specialized and often academic meanings that were largely adopted into the language through Chinese influence.

Common Words & Compounds

Here are some important compound words and phrases using 脈, grouped by their thematic focus:

Medical and Physiological Terms

• 脈拍みゃくはく (myakuhaku) — pulse (beat). 看護師かんごしが患者かんじゃの脈拍みゃくはくを測はかった。 (The nurse took the patient's pulse.)
• 動脈どうみゃく (dōmyaku) — artery. 動脈どうみゃくは心臓しんぞうから全身ぜんしんへ血液けつえきを送おくる役割やくわりを担になっています。(Arteries are responsible for sending blood from the heart to the entire body.)
• 静脈じょうみゃく (jōmyaku) — vein. 静脈じょうみゃくは体からだの隅々すみずみから心臓しんぞうへ血液けつえきを戻もどします。(Veins return blood from all parts of the body to the heart.)
• 脈絡みゃくらく (myakuraku) — connection, coherence. Often used in the negative, as in 脈絡みゃくらくがない (myakuraku ga nai - incoherent, disconnected). 彼かれの話はなしは脈絡みゃくらくがなく、理解りかいするのが難むずかしかった。(His story lacked coherence and was difficult to understand.)

Biological and Hereditary Terms

• 血脈けつみゃく (ketsumyaku) — bloodline, lineage, family tree. 彼かれの家系かけいは古ふるい血脈けつみゃくに属ぞくしている。(His family belongs to an old bloodline.)

Geographical and Structural Terms

• 山脈さんみゃく (sanmyaku) — mountain range. 日本にほんには美うつくしい山脈さんみゃくが多おおくあります。(There are many beautiful mountain ranges in Japan.)
• 水脈すいみゃく (suimyaku) — water vein (underground stream). 地下ちかの水脈すいみゃくを調しらべて井戸いどを掘ほる。(We will investigate the underground water vein and dig a well.)

Figurative and Abstract Concepts

• 文脈ぶんみゃく (bunmyaku) — context (of a sentence, conversation). 単語たんごの意味いみは文脈ぶんみゃくによって変かわる。(The meaning of a word changes depending on the context.)
• 人脈じんみゃく (jinmyaku) — personal connections, network (of people). 彼かれは広ひろい人脈じんみゃくを持もっている。(He has a wide network of personal connections.)
• 語脈ごみゃく (gomyaku) — context (of words), flow of language. 論文ろんぶんの語脈ごみゃくが自然しぜんで読よみやすい。(The flow of language in the thesis is natural and easy to read.)
• 脈があるみゃくがある (myaku ga aru) — there's a chance/hope (literally, 'there's a pulse'). 諦あきらめるにはまだ早はやい、まだ脈みゃくがある。(It's too early to give up, there's still a chance.)
• 脈がないみゃくがない (myaku ga nai) — there's no chance/hope (literally, 'there's no pulse'). 残念ざんねんながら、この計画けいかくにはもう脈みゃくがない。(Unfortunately, there's no hope left for this plan.)

Example Sentences

Memory Tip

To remember 脈, visualize its components: ⺼ (にくづき), the 'flesh' radical on the left, and 永 (ながい), meaning 'long' or 'eternal,' on the right. Imagine the 'flesh' of your arm, with a 'long,' continuous 'flow' of blood inside – that's your pulse or a vein. The right component 永 also visually represents flowing water, which clearly shows the constant, rhythmic movement of blood through our body, keeping the 'flesh' alive. So, a helpful mnemonic is to think of "blood flowing eternally through the flesh," or the "long current within the body," which perfectly conveys the meaning of a pulse or a vein.