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.

Word History and Origins

Origin of positioner¹

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

Example Sentences

A positioner hooked a line to the ship and pulled it quickly into the repair bins.

From Project Gutenberg