1.
outdoors; the open air; outside (a building)
The space outside the doors of a building. Formal and literary; common in written instructions, signage, and academic prose.
戸外での運動を勧める。
Recommend outdoor exercise.
この植物は戸外でも育つ。
This plant can grow outdoors as well.
気温が下がる冬季は戸外での活動を控えるよう呼びかけている。
We are calling on people to refrain from outdoor activities in winter when temperatures drop.
Compound of 戸 (door) + 外 (outside). Literally 'outside the door,' i.e., outdoors.
REGISTER:
Formal and literary. In speech and everyday writing, 屋外 or 外 are far more common.
COMMON COLLOCATIONS:
- 戸外活動: outdoor activity
- 戸外運動: outdoor exercise
- 戸外で過ごす: spend time outdoors
SIMILAR WORDS:
- 屋外: outdoor (of a building) — more common in modern usage; standard for signs and instructions
- 野外: outdoor (in nature) — emphasizes natural settings, used for concerts and festivals
- 外: outside — everyday term; broadest in scope