Translation guide
The metal aluminum. In Japanese, it is almost always referred to as アルミ (arumi), a loanword from English. The full form アルミニウム is also used, especially in formal or scientific contexts.
Referring to the lightweight, silvery metal used in cans, foil, construction, etc.
The most common and natural way to say 'aluminum' in everyday Japanese. Used in compounds like アルミ缶 (aluminum can) and アルミホイル (aluminum foil).
この缶はアルミでできています。
This can is made of aluminum.
アルミホイルを買ってきて。
Buy some aluminum foil.
The full form, used in formal, scientific, or technical contexts. Less common in daily conversation.
アルミニウムは軽量で耐食性があります。
Aluminum is lightweight and corrosion-resistant.