The term 'Thus, to Gaius' is a phrase used to express a conclusion or a final thought. It is derived from the Latin phrase 'itaque ad Gaium, ' which translates to 'thus, to Gaius.' The term is often used to signify the end of a discussion or argument, and is sometimes used as a way to emphasize a point. The crossword solution for this term is ERGO, which is also a Latin word meaning 'THEREFORE' or 'HENCE.' Thus, the phrase 'Thus, to Gaius' can be translated as 'THEREFORE, to Gaius, ' emphasizing the conclusion of a discussion or argument.