アルミarumi

1. nounaluminum; aluminium
   ずらりと並ならんだアルミのポットやなべ。↗

   A battery of aluminum pots and pans.

• SynonymアルミニウムNeutralThe full loanword for the metal; it leans formal and scientific, whereas 「アルミ」 is the common everyday abbreviation.
• SynonymＡｌWrittenThe element symbol, used mostly in writing such as chemistry and specification tables; in ordinary conversation people say 「アルミ」.
• RelatedニュームCasualAn old-fashioned abbreviation with a Showa-era flavor; in modern usage people say 「アルミ」 instead.

Say 「アルミ」 in everyday speech, as in 「アルミ缶」 and 「アルミホイル」; use 「アルミニウム」 in formal or scientific contexts, write 「Al」 in formulas and spec tables, and avoid 「ニューム」, which sounds dated.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. アルミニウムの略称りゃくしょう。