Here are some examples of words that use the root "poly":
* Polyglot: Someone who speaks multiple languages.
* Polytheism: The belief in multiple gods.
* Polygon: A geometric shape with many sides.
* Polygraph: A lie detector that measures multiple physiological responses.
* Polymer: A molecule made up of many repeating units.
The prefix "poly-" often indicates that something is composed of multiple parts or involves multiple instances of something.