もうしょび 猛暑日 LinksSentence search for 猛暑日Sentence search for もうしょびKanji details for 猛, 暑 and 日Edit in JMdict Noun1. day on which the temperature rises above 35°C; extremely hot daySee also 夏日, See also 真夏日 Discussions Log in to talk about this word.