ワンデー １Ｄａｙ LinksSentence search for １ＤａｙSentence search for ワンデーSentence search for １デーSentence search for ワンデイSentence search for １デイEdit in JMdict Noun which may take the genitive case particle 'no', Noun1. one-dayNoun which may take the genitive case particle 'no', Noun2. single-use (contact lenses, etc.); daily-disposableOther forms１デー 【ワンデー】、１Ｄａｙ 【ワンデイ】、１デイ 【ワンデイ】 Discussions Log in to talk about this word.