Origin: Latin suffix -tion
Connotation has 3 different meanings across 1 category:
what you must know in order to determine the reference of an expression
an idea that is implied or suggested
A meaning of a word or phrase that is suggested or implied, as opposed to a denotation, or literal meaning. A characteristic of words or phrases, or of the contexts that words and phrases are used in.
The word comes from the Medieval Latin connotātiō, which originally meant "to mark in addition." It entered English through the verb connote, combining the prefix meaning "together" with a root meaning "to note."