Wasei-eigo term for sea level, often used in contexts like elevation, flooding, or coastal engineering. Not a direct translation of 'zero metre'.
wasei-eigo (Japanese-coined English), from zero metre
This area is a zero-meter zone and has a high risk of flooding.
I'm standing at a point that is at sea level.
Wasei-eigo from English 'zero' and 'metre', used to mean 'sea level' rather than a literal zero-metre measurement.