低気圧

1. Origins, structure, and basic meaning

• Structure: In 低気圧 (ていきあつ), low 低 modifies atmospheric pressure 気圧, forming a low-pressure system.
• Basic usage: 低気圧 denotes a meteorological low-pressure system.

2. Common pitfalls and similar expressions

• A meteorological low
  • 低気圧が makes the system the subject affecting weather, while 低気圧の links it to a track, effect, or other following noun.