Chat is a text-based communication that is live or in real-time. For example, when talking to someone in chat any typed text is received by other participants immediately. In contrast, other text-based communications such as e-mail are modes of correspondence that are not real-time.

verb (used without object), chat·ted, chat·ting. to converse in a familiar or informal manner. Digital Technology. to participate with one or more people, through the internet, in a real-time conversation, typically as a series of short text exchanges in a specific application, as instant messaging, or by using images, ...

Chat refers to the process of communicating, interacting and/or exchanging messages over the Internet. It involves two or more individuals that communicate through a chat-enabled service or software. Chat is also known as chatting, online chat or Internet chat.

intr.v. chat·ted, chat·ting, chats 1. To converse in an easy, familiar manner; talk lightly and casually. 2. Computers To participate in a synchronous exchange of remarks with one or more people over a computer network.

noun Definition of chat 1 as in talk friendly, informal conversation or an instance of this short chats between parents and teachers during the school's open house