Jisho

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Noun
1. heat wave
Wikipedia definition
2. Heat waveA heat wave is a prolonged period of excessively hot weather, which may be accompanied by high humidity. There is no universal definition of a heat wave; the term is relative to the usual weather in the area and relative to normal temperatures for the season. Temperatures that people from a hotter climate consider normal can be termed a heat wave in a cooler area if they are outside the normal climate pattern for that area.
Read “Heat wave” on English Wikipedia
Read “熱波” on Japanese Wikipedia
Read “Heat wave” on DBpedia

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