Meaning
The kanji 旋 (せん) represents the core concepts of 'revolve,' 'rotate,' 'turn,' and 'circulate.' It denotes a motion following a circular or spiral path, often around a central point. Unlike simpler kanji such as 回 (kai), which can imply a single turn or repetition, 旋 often conveys a more continuous, dynamic rotation, or a movement forming a distinct circular or helical pattern.
Historically, the kanji 旋 is considered a phono-semantic compound. Its left component, 方 (fāng), acts as the phonetic element, vaguely suggesting the sound 'sen.' 方 also means 'direction' or 'square.' The right component, 疋 (pǐ), originally depicted a 'foot' or 'leg' and later came to represent 'piece of cloth.' Within the context of 旋, 疋 likely suggests movement or walking. Ancient forms of the character sometimes depicted feet walking in a circle, reinforcing this idea. Therefore, the combination visually evokes the idea of moving or turning in a specific 'direction' or around a 'point,' leading to the meaning of rotation or turning.
Its visual shape, with the directional 方 on the left and the foot-like 疋 on the right, can be imagined as guiding movement in a circle. This 11-stroke kanji is a Jōyō kanji, typically taught in junior high school. It's classified at N1 level for the JLPT, making it a valuable character for expressing complex motions and patterns in advanced Japanese.
Readings
On'yomi (音読み) — Chinese-derived readings
The primary On'yomi for 旋 is セン (SEN). This reading is highly prevalent and forms the basis for most common compound words involving 旋. It is used when the kanji is part of a larger compound word, particularly those related to circular motion, turning, or patterns that inherently involve rotation.
- 旋回 (senkai) — turning, circling, gyration. This refers to the act of turning or making a circle, often used for vehicles, aircraft, or birds, like a plane circling an airport.
- 旋風 (senpū) — whirlwind, maelstrom; also used figuratively to mean a sensation or flurry of activity. It literally describes a 'turning wind.'
- 旋律 (senritsu) — melody, tune. This meaning is derived from the 'winding' or 'circling' pattern of musical notes in a tune.
- 螺旋 (rasen) — spiral, helix. This compound literally means 'snail spiral,' with 螺 (ra) meaning 'snail.' It's one of the most common words incorporating 旋, often seen in phrases like 螺旋階段 (rasen-kaidan, spiral staircase).
Kun'yomi (訓読み) — Native Japanese readings
The Kun'yomi for 旋 are めぐ.る (megu.ru) and めぐ.らす (megu.rasu). While officially listed, learners should note that these native readings for 旋 are considerably less common in everyday usage. They are often overshadowed by their homophonous counterparts using the kanji 巡 (めぐ.る, めぐ.らす), which generally carries a nuance of 'patrol' or 'circulate a route.' However, when 旋 is used with these kun'yomi, it specifically emphasizes a rotational or turning motion.
- 旋る (meguru) — to turn, to revolve (intransitive). While 巡る is far more common, 旋る can specifically denote a planetary orbit or a continuous turning motion, emphasizing the physical rotation.
- 旋らす (megurasu) — to turn something around, to spin something (transitive). Similar to めぐる, 巡らす is generally preferred. However, 旋らす specifically focuses on physically causing something to turn or revolve, or mentally "turning over" ideas.
Common Words & Compounds
Mastering 旋 is key to understanding a wide range of advanced vocabulary, particularly in fields like motion, music, and mechanics. Here are some common words and compounds, categorized by their thematic usage:
Motion and Movement
- 旋回 (senkai) — turning, circling, gyration. Used for planes, ships, or birds making a turn, e.g., 飛行機が旋回する (hikōki ga senkai suru, an airplane circles).
- 旋風 (senpū) — whirlwind; figuratively, a sensation or craze that sweeps through. For instance, 新製品が業界に旋風を巻き起こす (shinseihin ga gyōkai ni senpū o makiokosu, a new product causes a sensation in the industry).
- 螺旋 (rasen) — spiral, helix. Describes a coiled or winding shape, as in 螺旋階段 (rasen-kaidan, spiral staircase).
- 旋転 (senten) — rotation, revolution. Often used in scientific or technical contexts for the spinning of objects, like the Earth's rotation.
- 逆旋回 (gyakusen kai) — reverse turn, turn in the opposite direction.
Music and Arts
- 旋律 (senritsu) — melody, tune. The sequence of notes that 'winds' together to form a tune, e.g., 美しい旋律 (utsukushii senritsu, a beautiful melody).
- 旋法 (senpō) — musical mode. A system of rules for composing melodies.
- 旋律的 (senritsuteki) — melodic, melodious.
Technical and Specific Uses
- 旋盤 (senban) — lathe. A machine tool used for shaping materials by rotating them against a cutting tool.
- 旋条 (senjō) — rifling. The helical grooves inside a gun barrel that impart spin to a projectile.
- 旋毛 (tsumuji) — hair whorl, cowlick. This is an example of ateji (kanji used for sound and general meaning, not individual meanings), a very common native Japanese word.
Example Sentences
飛行機は空港の上空を旋回した。
Hikōki wa kūkō no jōkū o senkai shita.
The airplane circled over the airport.
新しい技術が業界に旋風を巻き起こした。
Atarashii gijutsu ga gyōkai ni senpū o makiokoshita.
New technology created a sensation in the industry.
地球は太陽の周りを旋る。（巡るがより一般的）
Chikyū wa taiyō no mawari o meguru. (Meguru ga yori ippanteki.)
The Earth revolves around the sun. (巡る is more common.)
彼は周囲を見渡すために頭をゆっくりと旋らした。（巡らしたがより一般的）
Kare wa shūi o miwatasu tame ni atama o yukkuri to megurashita. (Megurashita ga yori ippanteki.)
He slowly turned his head to survey his surroundings. (巡らした is more common.)
その歌の美しい旋律が心に響いた。
Sono uta no utsukushii senritsu ga kokoro ni hibiita.
The beautiful melody of that song resonated in my heart.
古い城の中には見事な螺旋階段があった。
Furui shiro no naka ni wa migoto na rasenkaidan ga atta.
Inside the old castle, there was a magnificent spiral staircase.
職人は旋盤を使って木材を精密に加工した。
Shokunin wa senban o tsukatte mokuzai o seimitsu ni kakō shita.
The craftsman precisely processed the wood using a lathe.
彼女の熱烈なスピーチは聴衆の心に旋風を巻き起こした。
Kanojo no netsuretsu na supīchi wa chōshū no kokoro ni senpū o makiokoshita.
Her passionate speech stirred up a storm of emotion in the audience.
風車の羽根が風を受けてゆっくりと旋転している。
Fūsha no hane ga kaze o ukete yukkuri to senten shiteiru.
The windmill blades are slowly rotating in the wind.
医師は病気の原因を究明するために、あらゆる可能性を旋らす。
Ishi wa byōki no gen'in o kyūmei suru tame ni, arayuru kanōsei o megurasu.
The doctor considers every possibility to ascertain the cause of the illness.
Memory Tip
To remember 旋, think of its components: 方 (direction/square) on the left and 疋 (foot/movement) on the right. Imagine a person's "foot" (疋) moving in various "directions" (方), causing them to "turn" or "revolve." For a vivid image, visualize a dancer skillfully performing a pirouette on a stage, moving their feet in precise "directions" to achieve a beautiful "rotation." Alternatively, consider a "square" (方) field, and someone walking in circles with their "foot" (疋) around it, creating a "swirling" path. These mental images help link the visual elements to the core meaning of turning or revolving.