What does ダイヤモンド mean?
ダイヤモンド is a Japanese noun meaning “diamond” in English. It can also be translated as “diamonds (suit)” depending on context. It is written as ダイヤモンド in hiragana, and daiyamondo in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
ダイヤモンドの硬度は１０である。
The hardness of diamond is 10.