noun, noun which may take the genitive case particle 'no'
heat wave; fierce heat; extreme summer heat
Refers to very severe hot weather, especially in summer or over a period of days. Often used in weather/news language and as 猛暑の before another noun.
今年の夏は記録的な猛暑だった。
This summer had record-breaking extreme heat.
猛暑の日は、こまめに水分を取ってください。
On days of fierce heat, please drink water regularly.
Many people walked to the station in the intense heat.
A Sino-Japanese compound written with 猛, associated with fierceness or intensity, and 暑, heat or hot weather.