It's derived from the Greek word "τέλος" (télos), which means "end" or "goal."
Here are some examples of how "tele" is used in English words:
* Telegraph: A device for sending messages over long distances.
* Telephone: A device for communicating over long distances.
* Telescope: An optical instrument for viewing distant objects.
* Television: A system for transmitting and receiving moving images over long distances.
* Telemetry: The science of measuring and transmitting data over long distances.