1.
fever, temperature
An abnormally high body temperature, usually indicating illness.
2.
heat, thermal energy
Warmth or high temperature of physical objects.
3.
enthusiasm, passion
Intense interest or excitement about something.
熱 can refer to body temperature, physical heat, or emotional passion.
COMMON COLLOCATIONS (medical):
- 熱がある: to have a fever
- 熱が出る: to develop a fever
- 熱が下がる: fever goes down
- 熱を測る: to take temperature
- 高熱: high fever
- 微熱: slight fever
Watch out
熱がある by itself means "to have a fever"; no word for "high" is needed. For hot weather use 暑い, and for a hot object 熱い, not 熱.
Related words
Related Words
Related:
熱中する (to be absorbed in)