What does the prefix word telo mean?

The prefix "telo-" comes from the Greek word "telos", which means end or completion.

It's often used in biological and medical terms to indicate something at the end or terminal portion of a structure.

Here are some examples:

* Telomere: The end of a chromosome

* Telophase: The final stage of cell division

* Telencephalon: The most anterior part of the brain

So, in general, "telo-" signifies the final stage, extremity, or endpoint of something.