ダイヤalso: ダイアダイヤCommon word›JLPTN3›Freq.FrequencyTop 5,000Meanings1noundiamondabbreviationAbbreviation of ダイヤモンド. Used in casual contexts, product names, and compounds.See also: ダイヤモンドこの指ゆび輪わには小ちい