銅・赤金|どうdou[1]atamadaka (head-high)

1. nouncopper (Cu)
   銅どうはよく電気でんきを通とおす。↗

   Copper conducts electricity well.
2. nounbronze (medal)

• SynonymＣｕWrittenWritten-style full-width element symbol for copper, occasionally seen in horizontal Japanese text; the standard chemical notation is the half-width 「Cu」.
• SynonymCuWrittenWritten-style half-width element symbol for copper, used mostly in chemical formulas and specification tables.
• Antonym黄金こがねNeutralNeutral word for gold, set against 「銅」 as the higher grade; think of the gap in rank between a gold medal and a bronze one.

Use 「銅」 for the metal copper or a bronze medal, as in 「銅メダル」; write 「Cu」 in chemical formulas; for gold, say 「金」.

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

1. （ドウ・あかがね）原子げんし番号ばんごう 29、元素げんそ記号きごう Cu の金属きんぞく元素げんそ。単体たんたいは常温じょうおん常圧じょうあつでは赤褐色せきかっしょくの固体こたい。カッパー。
2. （ドウ）青銅せいどう。また賞しょうのうち金かね・銀ぎんについで三さん番目ばんめのもの。