low atmospheric pressure; low-pressure system; depression; cyclone
Meteorological term for a region where atmospheric pressure is lower than surrounding areas, often associated with cloudy or stormy weather.
See also: 高気圧
A low-pressure system is approaching tomorrow, so it will probably rain.
Some people get headaches due to low atmospheric pressure.
bad mood; foul temper; tense atmosphere
Colloquial figurative use, likening a person's mood or a social situation to low atmospheric pressure. Often used in phrases like 低気圧な人 or 低気圧な雰囲気.
The boss is in a foul mood today, so it's hard to approach him.
There was a tense atmosphere in the meeting room.
A low-pressure system is rapidly intensifying over the Sea of Japan.
A strong low-pressure system is approaching the main island of Japan.
He's always in a gloomy mood, so you can never tell how he's feeling.
I have a headache because of the low pressure and can't focus on work.
bomb cyclone; explosive low-pressure system
tropical cyclone