Turn

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Turn

In the equities market, a reversal; unwind.

Reversal

A change in a security's price trend.
References in periodicals archive ?
When someone has lupus their immune system turns against them, attacking their own tissues, which can lead to joint pain, organ failure and even death.
The final straw comes when son Deek (Gordon McCorkell) turns against his alcoholic mum, packs her bags and chucks her out on the street.
Doctors have long wondered why, in some people, the immune system turns against parts of the body it is designed to protect, leading to autoimmune disease.