Meaning
Welcome! Let's learn about the kanji 石. Fundamentally, 石 means "stone" or "rock." It's a remarkably straightforward kanji, reflecting its meaning clearly in its visual structure. Whether you're thinking of a tiny pebble on the beach, a large boulder, or even a precious gemstone, all these can be referred to using 石.
Historically, 石 originated as a pictograph, directly representing the object it depicts. Envision a cliff face, similar to the radical 厂 (meaning 'cliff' or 'factory'), with a stone resting beneath it or perhaps just having fallen from it. The ancient scribes skillfully captured the essence of a rock in this simple, elegant character. This strong visual link makes 石 quite memorable once you understand its component story.
While 石 can occasionally function as a counter for stones or rocks, more specific counters are often used for particular types of stones or objects. As a very common and fundamental kanji, learning 石 early in your Japanese studies will be greatly beneficial. With only 5 strokes, it's taught to children in the 1st grade in Japan, underscoring its basic yet essential role in the language.
Readings
Like many kanji, 石 comes with both On'yomi (Chinese-derived readings) and Kun'yomi (native Japanese readings). Grasping when to apply each reading is fundamental for fluency.
On'yomi (音読み) — Chinese-derived readings
On'yomi readings are generally employed when 石 forms part of a compound word, particularly alongside other kanji of Chinese origin. The most frequently encountered On'yomi for 石 are セキ (seki), シャク (shaku), and コク (koku).
セキ (seki): セキ is the most common On'yomi reading for 石. You'll find it in many compound words referring to stones, minerals, and other hard, rock-like materials.
宝石 (houseki) — gem, jewel. This word showcases 石 in a context of beauty and value.
石炭 (sekitan) — coal. A natural resource extracted from the earth, much like other stones.
化石 (kaseki) — fossil. As fossils are often preserved within rock, 石 is a fitting component here.
シャク (shaku): シャク is less common in everyday Japanese but appears in specific terms. A key example is:
磁石 (jishaku) — magnet. While a magnet isn't a simple stone, it is often derived from metallic minerals found in the earth. Historically, lodestones were also natural magnets.
コク (koku): コク is a rather specialized reading, referring to a historical unit of volume, primarily for rice (approximately 180 liters). During the Edo period, it also served to measure land productivity and the wealth of feudal lords.
石高 (kokudaka) — historical land yield/volume measure. This term often appears in historical dramas or texts.
Kun'yomi (訓読み) — Native Japanese readings
The Kun'yomi reading is typically used when the kanji appears alone, or when it combines with okurigana (送り仮名). It's also common in compound words that have a native Japanese feel.
いし (ishi): This is the primary and most direct native Japanese reading for 石. It means a "stone" or "rock" in the most straightforward sense.
石 (ishi) — stone, rock. This is the simplest and most fundamental use.
小石 (koishi) — pebble. The 小 (ko) means small, so it's a small stone.
石垣 (ishigaki) — stone wall. A common sight in old castles and gardens in Japan.
Common Words & Compounds
Having explored the readings, let's look at some common words and compounds that use 石. You'll notice this kanji's versatility, as it appears in contexts ranging from nature and construction to more abstract concepts.
Nature & Materials
石 (ishi) — stone, rock. The most basic and direct meaning.
小石 (koishi) — pebble, small stone. Used for tiny stones, such as those found by a river.
軽石 (karuishi) — pumice stone. Literally "light stone," this refers to its lightweight, porous structure.
宝石 (houseki) — gem, jewel. Refers to precious and beautiful stones.
石炭 (sekitan) — coal. A black, combustible sedimentary rock used as fuel.
化石 (kaseki) — fossil. Traces or remains of prehistoric life preserved in rock.
石材 (sekizai) — stone material. This term refers to stone used in building or other applications.
Construction & Objects
石垣 (ishigaki) — stone wall. A key element in historical Japanese architecture and landscaping, often seen at castles.
石像 (sekizou) — stone statue. Sculptures crafted from various types of stone.
磁石 (jishaku) — magnet, compass. This phenomenon often involves iron ore, and naturally occurring magnets (lodestones) were known historically.
石けん (sekken) — soap. Interestingly, this word uses the 石 reading. While its precise origin is debated, some theories link it to the hard, "stone-like" consistency of early soap or the saponification process.
Example Sentences
To understand how 石 is used, let's look at some natural, everyday Japanese sentences. Notice how the readings shift depending on the context!
道に石が転がっていました。
Michi ni ishi ga korogatte imashita.
A stone was rolling on the road.
彼は珍しい石を集めるのが趣味です。
Kare wa mezurashii ishi o atsumeru no ga shumi desu.
His hobby is collecting rare stones.
その指輪には大きな宝石が埋め込まれています。
Sono yubiwa ni wa ookina houseki ga ume komarete imasu.
A large gem is embedded in that ring.
お城の周りには頑丈な石垣があります。
O-shiro no mawari ni wa ganjou na ishigaki ga arimasu.
There is a sturdy stone wall around the castle.
石炭は主要なエネルギー源の一つです。
Sekitan wa shuyou na enerugii gen no hitotsu desu.
Coal is one of the main energy sources.
博物館で恐竜の化石を見ました。
Hakubutsukan de kyoryuu no kaseki o mimashita.
I saw a dinosaur fossil at the museum.
子供たちは川に小石を投げて遊んでいました。
Kodomotachi wa kawa ni koishi o nagete asonde imashita.
The children were playing by throwing pebbles into the river.
新しい石けんを使ってみたら、とてもいい香りがしました。
Atarashii sekken o tsukatte mitara, totemo ii kaori ga shimashita.
When I tried the new soap, it had a very nice scent.
磁石を使ってクリップを拾い上げました。
Jishaku o tsukatte kuripu o hiroiagemashita.
I used a magnet to pick up the clips.
庭師は庭に美しい石を配置しました。
Niwashi wa niwa ni utsukushii ishi o haichi shimashita.
The gardener arranged beautiful stones in the garden.
Memory Tip
You can easily remember 石 by visualizing its original pictographic meaning. Picture a small stone (口, the square shape at the bottom, which can be interpreted as a small stone here) breaking off and falling from a steep cliff or overhang (厂, the radical on top and left). The image suggests a stone resting beneath a cliff face, perhaps a fragment that has fallen from the mountain. This straightforward visual of a stone under a cliff will help you recall 石 and its meaning of 'stone' or 'rock'.