Translation guide
Silica is a chemical compound (SiO₂) found in nature as quartz, sand, and in living organisms. In Japanese, it is most commonly referred to as シリカ (shirika) in everyday and industrial contexts, while 二酸化ケイ素 (nisankakeiso) is the formal chemical name.
Referring to silica as a material, ingredient, or substance in non-specialist contexts (e.g., in products, food, or everyday conversation).
The most common and widely understood term for silica in Japanese. Used in product labels, health supplements, and general conversation.
このサプリメントにはシリカが含まれています。
This supplement contains silica.
シリカゲルは湿気を吸収します。
Silica gel absorbs moisture.
The formal chemical name for silica (SiO₂). Used in scientific, technical, and regulatory contexts.
二酸化ケイ素は石英の主成分です。
Silicon dioxide is the main component of quartz.
Refers to silica stone or quartzite, used in industrial contexts like refractories or ceramics. Not for general 'silica'.
ケイ石は耐火レンガの原料です。
Silica stone is a raw material for firebricks.
Referring to silica in chemistry, geology, or materials science, where precise terminology is needed.
The standard IUPAC name in Japanese. Used in academic papers, textbooks, and official documents.
二酸化ケイ素は化学式SiO₂で表されます。
Silicon dioxide is represented by the chemical formula SiO₂.
Also used in scientific contexts, especially in fields like materials science or when referring to amorphous silica.
Referring to silica in the body, in plants, or as a dietary supplement.
The standard term in health and nutrition. Used for silica supplements, bamboo silica, etc.
シリカは骨や肌の健康に良いと言われています。
Silica is said to be good for bone and skin health.
Refers to the element silicon, but sometimes used in contexts where silica is implied as a source of silicon. Not a direct translation of 'silica'.
シリカ is the loanword from English and is used in most non-specialist contexts (products, supplements, general conversation). 二酸化ケイ素 is the formal chemical name and is preferred in academic or regulatory writing. In everyday speech, シリカ is almost always the better choice.
この化粧品にはシリカが配合されています。
This cosmetic contains silica.
二酸化ケイ素の結晶構造を解析した。
We analyzed the crystal structure of silicon dioxide.
Silica is SiO₂, while silicon is the element Si. In Japanese, silicon is ケイ素 (keiso). Using ケイ素 for silica can cause confusion, though in some health contexts it may be loosely used.
シリカはケイ素と酸素の化合物です。
Silica is a compound of silicon and oxygen.
シリカはガラスの製造に使われます。
Silica is used in the production of glass.
この岩石のシリカ含有量は高いです。
The silica content of this rock is high.
We are researching synthesis methods for silica nanoparticles.
An older or alternative chemical name for silica (silicic anhydride). Rarely used today except in some traditional contexts.
無水ケイ酸は二酸化ケイ素の別名です。
Silicic anhydride is another name for silicon dioxide.
Silicon is an element necessary for plant growth.