noun, noun or participle which takes 'suru'
microwaving; heating in a microwave
Wasei-eigo from 'range up'; used colloquially for the act of microwaving food. Often used as a suru-verb.
wasei-eigo (Japanese-coined English), from range up
冷めたおかずをレンジアップして食べた。
I microwaved the cold side dish and ate it.
レンジアップすればすぐ温まるよ。
If you microwave it, it'll heat up right away.
Variant with interpunct; less common in everyday use.
Wasei-eigo (Japanese-made English) from 'range' (microwave oven) and 'up', likely modeled on phrases like 'heat up'. Not used in English.