热度 rèdù level of heat
level of heat; (figuratively) zeal; fervor; (colloquial) a temperature (i.e. abnormally high body heat)
How to remember 热度: 热 hot + 度 degree = level of heat.
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How it is used
- Level of heat, or (modern) buzz/popularity - 三分钟热度 (sān fēnzhōng rèdù) a three-minute enthusiasm (short-lived zeal), 话题热度 (huàtí rèdù) the buzz around a topic.
- Three senses: physical heat, fervor/zeal, and online popularity/heat of a topic; also colloquial 'a fever' (发热度).
- The 'online heat/buzz' sense is now very common in social media (热度高 trending hot).