positioner

American  

[puh-zish-uh-ner] / pəˈzɪʃ ə nər /

noun

1. a person or thing that positions.

2. Orthodontics. a removable device of resilient plastic material worn in the mouth usually during sleep to produce minor adjustments in the position of teeth after straightening appliances have been taken off.

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Etymology

Origin of positioner

First recorded in 1930–35; position + -er ¹

Example Sentences

With the positioner devices, if an infant rolls onto the stomach, the child's mouth and nose can press up against a bolster or some other part of the device, leading to suffocation.

From New York Times

If you’re using one that has a positioner without taking that extra step, there you go.

From New York Times

The babies had suffocated or become trapped and suffocated between the positioner and the side of a cot or bassinet.

From The Guardian

The immobility promised by a sleep positioner was advertised as a way to prevent the type of infant movement that could cause such a complication.

From US News

In the last 13 years, U.S. officials have received 12 reports of infants who suffocated because of sleep positioner products.

From Reuters