What is what does invaluable mean?

Invaluable means extremely valuable or precious, cannot be assigned a value or cannot be measured with money. It refers to something that is of great worth, importance, or significance and is indispensable or irreplaceable. It is often used to describe things that go beyond just monetary value, and that are extremely cherished and valuable. For example, the knowledge and experiences gained from a mentor may be described as invaluable.