What is the definition of suffix - ct?

The suffix "-ct" is not a common suffix in the English language. It is possible that you are thinking of a different suffix, such as "-ict" or "-uct".

-ict is a suffix that is used to form adjectives from nouns, meaning "related to" or "characterized by." For example:

* edict (noun) - a formal order or decree

* edictive (adjective) - relating to or characterized by an edict

-uct is a suffix that is used to form nouns from verbs, usually denoting the action or result of the verb. For example:

* conduct (verb) - to guide or lead

* conduct (noun) - the way in which a person behaves or acts

If you have a specific word in mind, please provide it, and I can help you understand the meaning of its suffix.