What does the root word dec mean?

The root word "dec" typically means ten or tenth. It comes from the Latin word "decem" which also means ten.

Here are some examples of words containing the root "dec":

* decade: a period of ten years

* decimal: based on the number ten

* December: the tenth month of the year (in the ancient Roman calendar)

* deciliter: one-tenth of a liter

* decimeter: one-tenth of a meter

There are some other words that might seem related to "dec" but come from different roots, like "decide" or "deception".