The term 'Modern Prefix' refers to two prefixes, Neo and ULTRA, that are commonly used in modern language. Neo is a three-letter prefix derived from the Greek word for 'NEW, ' and it is often used to describe something that is NEW or modern. ULTRA is a five-letter prefix derived from the Latin word for 'BEYOND, ' and it is often used to describe something that is extreme or BEYOND what is considered normal. Both Neo and ULTRA are used to describe modern concepts, products, and ideas.