Definition: The word "actualisation" is a term in modern German linguistics that refers to an event or object that has been proven true, as opposed to merely being believed by someone. In the context of language, actualisation is often used to describe events or ideas that have already occurred in a particular situation. For example, if you were given the statement "The sun will rise tomorrow," and it was proven true because the sun does indeed appear to rise tomorrow, then you would say that the event "sun will rise tomorrow" has been proven actualised. In linguistics, actualisation is also a term used to describe a situation where an idea or belief is confirmed by evidence. For example, if someone says "I believe that I can succeed in my project," and it was proven true because they have actually succeeded in their project, then they would say that the event "I believe I can succeed" has been actualised. It's worth noting that actualisation is not a fixed concept; it is an evolving term with meanings depending on how context and culture change over time.