Duumvirate

As the etymologically exact use of the word "circus" and the strangely technical-sounding "subtends" may already have suggested, Ithaca will draw heavily on English words derived from Latin, and, to a lesser extent, Greek. These ancient languages are the beloved province of theology (hence appropriate to a catechism), and of mathematics, biology, astronomy, medicine, law, and other scientific or quasi-scientific disciplines that seek unambiguous exactitude when analyzing the messy materials of life.

John Hunt 2014

Etymology of a triumph. Source: ewonago.wordpress.com.