In particular it means the flow goes around high and low pressure systems, permitting them to persist for long periods of time.

Chlordane may persist for long periods of time in air, soil and water.

In religious organizations reconciliation can persist for long periods of time.

Heavy snowfall is common during winter and this can persist for periods of up to two months.

This will often result in a hollowing if it persists for long periods of time.

Drowsiness may persist for prolonged periods of time or simply never cease.

Symptoms can persist for very long periods, often several months.

It may be necessary to contact a doctor if these symptoms become severe or persist for long periods of time.

"The wealth effect has to persist for reasonable periods of time," he said.

Psoriasis may persist for long periods of time without getting better or worse.