What is the Latin root of word twelve?

The Latin root of the word "twelve" is "duo" meaning "two".

While it might seem strange, "twelve" is actually related to "two" because it's based on the concept of "two sixes" (since 6 x 2 = 12).

Here's a breakdown:

* Duodecim: The Latin word for "twelve"

* Duo: The Latin word for "two"

* Decem: The Latin word for "ten"

* Duodecim literally translates to "two-ten"

So, "twelve" is essentially "two" plus "ten", referring to the two groups of six that make up twelve.