positioner

[puh-zish-uh-ner]
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.

Origin of positioner

First recorded in 1930–35; position + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for positioner

Historical Examples of positioner