Meaning
The kanji 晶 (ショウ) conveys the meanings of "crystal," "sparkle," and "clarity." It represents something intensely bright and transparent. Visually, 晶 is made up of three 日 (ひ) characters stacked together. Each 日 independently means "sun" or "day." Picture three suns shining intensely; this imagery helps us understand the dazzling brightness and light inherent in 晶. This ideographic formation directly conveys extreme brilliance and purity, much like light passing through a perfectly clear substance.
The etymology of 晶 is straightforward: it's an ideogram made of three identical 日 components. While a single 日 symbolizes the sun, stacking two 日s (as in 昌) can mean "prosperous" or "flourishing," suggesting abundant sunlight. However, adding a third 日 intensifies the meaning. It then specifically refers to the profound clarity and brilliance found in crystalline structures. This demonstrates how combining simple pictographs can create complex abstract meanings in kanji. The visual representation makes 晶 relatively easy to understand once you know its components. This kanji has 12 strokes and is a Grade 8 kanji. You'll often encounter it at the N1 level of the JLPT, reflecting its more specialized usage in advanced vocabulary.
Readings
On'yomi (音読み) — Chinese-derived readings
The main On'yomi reading for 晶 is ショウ (shō). This reading, derived from Chinese, is used almost exclusively in compound words. It evokes brightness, clarity, and the crystalline state.
ショウ (shō): This is the most common, and effectively the only, On'yomi reading for 晶. You'll frequently find it in scientific, material, and descriptive terms related to crystals, clarity, and sparkling phenomena.
結晶 (kesshō) — crystal; crystallization. This is perhaps the most fundamental and frequently encountered compound, directly meaning "crystal," such as in 砂糖の結晶 (satō no kesshō, sugar crystal).
液晶 (ekishō) — liquid crystal. A crucial term in modern technology, referring to the material used in LCD displays.
水晶 (suishō) — rock crystal; quartz. A common mineral known for its clarity and crystalline structure.
Kun'yomi (訓読み) — Native Japanese readings
The kanji 晶 (ショウ) does not have widely recognized or common Kun'yomi readings in general Japanese vocabulary. While you might occasionally find it in personal names, such as あきら (akira), these are not standard Kun'yomi for everyday vocabulary. In everyday Japanese, 晶 is almost exclusively used with its On'yomi in compound words. This emphasizes its role as a component in more technical or descriptive terms, rather than a standalone word with a native Japanese pronunciation. Therefore, when studying 晶, focus primarily on its On'yomi and the compounds it forms.
Common Words & Compounds
The kanji 晶 (ショウ) appears in many Japanese words, especially those related to materials science, optics, and clarity. Below are some common compounds, grouped by theme:
Crystal & Material Science: These terms directly relate to crystalline structures and materials.
結晶 (kesshō) — crystal; crystallization; crystalline. This is the most essential word using 晶, as in 雪の結晶 (yuki no kesshō, snowflake/snow crystal).
液晶 (ekishō) — liquid crystal. A core term for display technology.
多結晶 (takeishō) — polycrystalline; polycrystal. Describes materials composed of many small crystals.
単結晶 (tankesshō) — single crystal; monocrystal. Refers to materials made of one continuous crystal lattice.
水晶 (suishō) — rock crystal; quartz. A natural crystalline mineral.
Medical & Biological Terms: 晶 can appear in terms related to parts of the body with crystalline properties or clarity.
眼球水晶体 (gankyū suishōtai) — crystalline lens of the eye. Often just 水晶体 (suishōtai).
Descriptive Terms: Words that use 晶 to describe a sparkling or clear quality, though less common than material science terms.
晶瑩 (shōei) — sparkling; glistening; clear. A more literary or poetic term.
Specialized Terms: Other specific uses.
結晶学 (kesshōgaku) — crystallography. The scientific study of crystals.
結晶構造 (kesshō kōzō) — crystal structure. Describes the arrangement of atoms in a crystal.
結晶粒 (kesshōryū) — crystal grain. A small crystal forming part of a larger material.
晶癖 (shōheki) — crystal habit. The characteristic external shape of a crystal.
Example Sentences
この石はまるで氷の結晶のように透明だ。
Kono ishi wa marude koori no kesshō no yō ni tōmei da.
This stone is as transparent as an ice crystal.
液晶ディスプレイは今やどこでも見られます。
Ekishō disupurei wa ima ya doko demo miraremasu.
Liquid crystal displays can now be seen everywhere.
その洞窟には美しい水晶がたくさんあった。
Sono dōkutsu ni wa utsukushii suishō ga takusan atta.
There were many beautiful quartz crystals in that cave.
塩の結晶は顕微鏡で見ると立方体だ。
Shio no kesshō wa kenbikyō de miru to rippōtai da.
Salt crystals are cubic when viewed under a microscope.
長年の研究が新しい技術の結晶として実を結んだ。
Naganen no kenkyū ga atarashii gijutsu no kesshō to shite mi o musunda.
Years of research bore fruit as the culmination (crystal) of new technology.
この鉱物は独特の結晶構造を持っている。
Kono kōbutsu wa dokutoku no kesshō kōzō o motte iru.
This mineral has a unique crystal structure.
雪の結晶はどれも異なる形をしている。
Yuki no kesshō wa dore mo kotonaru katachi o shite iru.
Every snowflake (snow crystal) has a different shape.
彼の論文は日頃の努力の結晶だ。
Kare no ronbun wa higoro no doryoku no kesshō da.
His thesis is the culmination (crystal) of his daily efforts.
砂糖が水から結晶化する様子を観察した。
Satō ga mizu kara kesshōka suru yōsu o kansatsu shita.
We observed the process of sugar crystallizing from water.
Memory Tip
To remember 晶 (ショウ), visualize its structure: three 日 (ひ, sun/day) characters stacked on top of each other. Imagine three suns shining intensely. This creates an overwhelming sense of brightness and clarity. This intense, pure, and focused light is what forms a "crystal." Picture light reflecting off a crystal's facets, sparkling brilliantly under the concentrated glow of three suns. This kanji is essentially "sun + sun + sun," symbolizing extreme brightness. By extension, it represents the transparent, dazzling quality of a crystal. This simple, direct visual connection to its components makes 晶 very memorable as the kanji for "crystal" or "sparkle."