Where did the root word quad come from?

The root word "quad" comes from the Latin word "quadri", which means "four."

This Latin root appears in many English words that refer to things with four parts or that are related to the number four, such as:

* Quadrangle: A four-sided figure.

* Quadrant: One of four quarters of a circle.

* Quadruped: An animal with four feet.

* Quadriceps: A muscle group in the thigh with four parts.

* Quadrennial: Occurring every four years.