Meaning
The kanji 丹 (tan) primarily means vermilion or cinnabar. This bright, reddish-orange pigment is traditionally derived from the mineral cinnabar (mercuric sulfide). Beyond just the color, 丹 also refers to related substances, such as red earth or red pigment.
Historically, cinnabar was crucial in traditional medicine and alchemy. Because of this, 丹 came to signify medicine, especially a medicinal pill or an elixir. These were often associated with immortality or health in ancient Chinese alchemy. Furthermore, 丹 can imply sincerity or devotion. This meaning stems from the idea of the innermost, vital core, often associated with the body's 'cinnabar field' (丹田).
Visually, 丹 is often explained as a pictograph. The dot (丶) inside symbolizes a precious lump of cinnabar ore, while the outer shape (冂) represents a pit or mine shaft where it's found. This visual representation directly reflects its primary meaning as the source of vermilion.
Despite its simple four strokes, 丹 holds rich historical and cultural significance. It's an essential character in advanced Japanese vocabulary, appearing in classical literature, medicine, and art-related terms. This 4-stroke kanji is a Joyo Kanji, though it isn't assigned to a specific elementary school grade. Students typically learn it at a secondary school level or higher, corresponding to JLPT N1.
Readings
On'yomi (音読み) — Chinese-derived readings
The main On'yomi for 丹 is タン (tan). This is the most common reading in modern Japanese, especially in compound words where 丹 relates to red, cinnabar, medicine, or sincerity.
- 丹色 (tanshoku) — vermilion color; cinnabar red.
This term refers to the distinct reddish-orange hue of vermilion, often seen in traditional art or architecture.
- 丹薬 (tanyaku) — medicinal pill; elixir.
It often refers to traditional Chinese medicine pills or legendary elixirs of immortality, like those sought by ancient emperors.
- 丹田 (tanden) — hara (a specific point in the lower abdomen); the center of one's being.
An important concept in East Asian martial arts and spiritual practices, it's believed to be the source of qi (life energy).
Kun'yomi (訓読み) — Native Japanese readings
While less common in modern compounds than its On'yomi, 丹 has Kun'yomi readings that link it to native Japanese vocabulary, particularly for red colors or pigments. These readings are あか (aka) and に (ni), though they rarely appear as standalone words for 丹.
- 丹塗り (ninuri) — vermilion lacquer; lacquered in vermilion.
This term describes the traditional Japanese art of applying vermilion lacquer, commonly seen on shrines, temples, and traditional crafts.
- 丹 (aka) — red; rouge (less common as a standalone word for 丹, but reflects the basic meaning of red).
Though 丹 is almost never read あか on its own, this reading has a historical connection to the color red.
- 丹泥 (nidei) — red clay; red mud.
This refers to natural red earth or clay used for pigments or ceramics, such as in traditional pottery.
Common Words & Compounds
The kanji 丹 appears in various compounds, reflecting its diverse meanings related to color, medicine, and human qualities. Here are some examples, categorized by their primary association:
Color & Material-Related
- 丹色 (tanshoku) — vermilion color; cinnabar red.
- 丹青 (tansei) — painting; art (literally "red and blue," referring to primary colors in traditional painting).
- 丹砂 (tansha) — cinnabar.
- 丹塗り (ninuri) — vermilion lacquer.
Medicine & Alchemy-Related
- 丹薬 (tanyaku) — medicinal pill; elixir.
- 仙丹 (sentan) — elixir of immortality; magic pill.
- 霊丹 (reitan) — miraculous medicine; divine elixir.
Effort & Sincerity-Related
- 丹精 (tansei) — diligence; devotion; painstaking effort; sincerity.
- 丹念 (tannen) — careful; meticulous; scrupulous.
- 丹心 (tanshin) — sincerity; devotion; loyal heart (often used in classical contexts).
Cultural & Philosophical
- 丹頂 (tanchō) — red-crowned crane (often refers to the Japanese crane, known for its red patch on the head).
- 丹田 (tanden) — hara; vital point in the lower abdomen in Eastern philosophy.
Example Sentences
彼女は丹精込めて庭の手入れをした。
Kanojo wa tansei komete niwa no teire wo shita.
She meticulously took care of the garden with great diligence.
古い神社の柱は丹色に塗られていた。
Furui jinja no hashira wa tanshoku ni nurarete ita.
The pillars of the old shrine were painted in vermilion.
武道では、丹田を意識することが重要だと言われる。
Budō de wa, tanden o ishiki suru koto ga jūyō da to iwareru.
In martial arts, it is said to be important to be conscious of the 'tanden'.
彼は細部まで丹念に調べた。
Kare wa saibu made tannen ni shirabeta.
He investigated thoroughly and meticulously down to the smallest details.
伝説によると、その丹薬は不老不死を与えるという。
Densetsu ni yoru to, sono tanyaku wa furōfushi o ataeru to iu.
According to legend, that elixir grants eternal youth and immortality.
丹頂鶴は日本の象徴的な鳥です。
Tanchōzuru wa Nihon no shōchōteki na tori desu.
The red-crowned crane is a symbolic bird of Japan.
職人は丹を塗り、美しい漆器を作った。
Shokunin wa ni o nuri, utsukushii shikki o tsukutta.
The craftsman applied vermilion lacquer to create beautiful lacquerware.
彼の作品は丹青の技が光る。
Kare no sakuhin wa tansei no waza ga hikaru.
His artwork shines with masterful painting techniques.
Memory Tip
To remember 丹, visualize a small, precious lump of cinnabar red mineral. The single dot (丶) represents this mineral, while the outer box (冂) symbolizes a mine shaft or pit where it's discovered. This little red dot is the source of the vibrant vermilion pigment.
Alternatively, imagine it as a single, potent pill or elixir, glowing red and contained within a simple container. The internal dot (丶) gives it the distinctive characteristic of something tiny yet significant within an enclosure, reinforcing its association with a potent, red substance.