dead zone


noun

Ecology. an area in a body of water, especially an ocean, having oxygen levels that are not adequate to support life: shellfish threatened by an annual dead zone in the Gulf of Mexico.
a period or place where there is little activity or excitement: A dead zone for home sales is November and December.

British Dictionary definitions for dead zone

dead zone

noun

an area of water that cannot support marine life, being virtually devoid of oxygen due to the presence of nitrates that stimulate algae growth
an area where a mobile phone does not receive a signal
any area where something does not exist or prosper a dead zone for cinemas