The definition of a tenet is a belief or principle that is held by a group as being true.
An example of tenet is the Christian belief that Jesus is the son of God.
a principle, doctrine, or belief held as a truth, as by some group
Origin of tenetClassical Latin he holds ; from tenere: see tenant
A doctrine, principle, or position held as part of a philosophy, religion, or field of endeavor.
Origin of tenetProbably from Medieval Latin, from Latin, third person sing. present indicative of tenēre, to hold; see ten- in Indo-European roots.
Latin tenet (“he holds"), from teneÅ (“hold; have")