水銀（すいぎん、suigin）
- mercury

The Japanese word 水銀 (すいぎん, suigin) refers to the element mercury (Hg) in Japanese. It’s a heavy, silvery-white metal that is liquid at room temperature. It's known for its unique properties and has been used in various applications, although its toxicity is now well-recognized and its use has become restricted. The word specifically refers to the chemical element itself.

⚫︎水銀は有毒な金属です。 Translation: Mercury is a toxic metal. ⚫︎温度計に水銀が使われています。 Translation: Mercury is used in thermometers. ⚫︎水銀中毒の症状が出た。 Translation: Symptoms of mercury poisoning appeared.

This word is used when discussing the element mercury, its properties, its uses, its dangers, or any context related to the chemical element. It’s common in scientific discussions, in discussions about environmental pollution, or in explaining the composition of certain materials. You can use it when talking about science, medicine, or environmental issues. Be mindful of its toxicity.

⚫︎The word is most commonly written using the kanji 水銀. ⚫︎The reading is written in hiragana as すいぎん. ⚫︎There is no variation in okurigana. ⚫︎The word is not written in katakana.

There aren’t really direct synonyms, as 水銀 specifically refers to the element. However, other related terms might be used depending on context: ⚫︎For describing its state: 液体金属 (えきたいきんぞく, ekitai kinzoku) - liquid metal. ⚫︎For discussing mercury poisoning: 水銀中毒 (すいぎんちゅうどく, suigin chūdoku) - mercury poisoning.

There aren't specific antonyms, since it's a specific substance. However, if discussing toxicity, you could mention: ⚫︎安全な金属 (あんぜんなきんぞく, anzen na kinzoku) - safe metal.

この工場は水銀を環境に排出しました。 ・Translation: This factory discharged mercury into the environment. ・Explanation: This sentence illustrates the environmental concerns associated with 水銀 and its potential impact on the environment.

水銀を含んだ電池は適切に廃棄しなければなりません。 ・Translation: Batteries containing mercury must be disposed of properly. ・Explanation: This example highlights the importance of proper disposal of products containing 水銀, emphasizing the need for environmental awareness and the potential hazards associated with 水銀.

The word 水銀 is composed of two kanji: 水 (すい, sui) meaning "water" and 銀 (ぎん, gin) meaning "silver". This is because 水銀, or mercury, is a metal that is liquid like water and looks like silver.