アルミ（アルミ、arumi）
- aluminum

The Japanese word アルミ (arumi) refers to "aluminum" or "aluminium," the chemical element with the symbol Al. It's a lightweight, silvery-white metal that is widely used in various applications due to its properties such as being lightweight, strong, and resistant to corrosion. アルミ is typically used to describe the material itself, objects made from aluminum, or things related to aluminum.

⚫︎ アルミ缶 Translation: Aluminum can ⚫︎ アルミホイル Translation: Aluminum foil ⚫︎ アルミ合金 Translation: Aluminum alloy

You use アルミ in Japanese in the same way you would use "aluminum" or "aluminium" in English. It's used to specify the material of something, to describe objects made from aluminum, or in technical contexts where the properties of アルミ are relevant. It's a common word used in everyday conversation, in the context of construction, manufacturing, and food preparation, etc.

アルミ is written in katakana, as it's a loanword from the English word "aluminum." There are no other common ways to write this word in Japanese. There is no okurigana. The word itself doesn't change form.

There are no direct synonyms for アルミ that specifically refer to aluminum. You might describe something as "lightweight" 軽い (karui) if the lightness of aluminum is relevant, or specify the material, such as "metal" 金属 (kinzoku) or "material" 材料 (zairyō), but these are not synonyms for aluminum itself.

There aren't specific antonyms for アルミ. One might use words that describe different metals, such as iron 鉄 (tetsu), or other non-metallic materials.

この鍋はアルミ製です。 ・Translation: This pot is made of aluminum. ・Explanation: This sentence describes the material that the pot is made of. The use of アルミ製 (arumi-sei), meaning "made of aluminum," is common.

アルミの階段は軽くて丈夫です。 ・Translation: Aluminum stairs are light and durable. ・Explanation: This sentence uses アルミ to describe the material of the stairs, highlighting its properties of being light and strong.

アルミ is a loanword from English "aluminum". The word entered the Japanese language and was adapted to Japanese phonetics.