The definition of crat is a supporter of a specific type of government.
An example of crat used as a suffix is in the word democrat which means a member of the Democratic political party or someone who believes in equality and majority rule.
participant in or supporter of (a specified kind of) government or ruling body: democrat, aristocrat
Origin of -cratFrench -crate ; from Classical Greek krat?s ; from kratos, rule, strength: see hard
A participant in or supporter of a specified form of government: technocrat.
Origin of -cratFrench -crate, from Greek -krat&emacron;s, ruler, from kratos, strength, power; see –cracy.