The adjective virtual is used to describe something that exists in essence but not in actuality. You may have made a virtual friend on an online gaming site, but don't expect that person to meet you for coffee. The meaning of VIRTUAL is being such in essence or effect though not formally recognized or admitted. How to use virtual in a sentence. Learn the definition of virtual as an adjective in different contexts, such as almost, computer, or internet. See examples, synonyms, and translations of virtual in various languages. virtual definition : operating online rather than physically present. Check meanings , examples, usage tips, pronunciation, domains, and related words. Discover expressions like " virtual work", " virtual pet", " virtual community".