WHAT definition: 1. used to ask for information about people or things: 2. used in questions that show you are…. Learn more. In cases where both what and which are possible, with similar meaning, what is preferred for open-ended choices, while which is preferred for choices from a closed group or set. For example, Which one of these do you want? not What one of these do you want?. As used to begin an exclamation, what and such are largely interchangeable, with a few exceptions: Nouns modified by such. Definition of what in the Definitions.net dictionary. Meaning of what. What does what mean? Information and translations of what in the most comprehensive dictionary definitions resource on the web. Download WhatsApp on your mobile device, tablet or desktop and stay connected with reliable private messaging and calling. Available on Android, iOS, Mac and Windows. The meaning of WHAT is —used as an interrogative expressing inquiry about the identity, nature, or value of an object or matter. How to use what in a sentence. WhatsApp Messenger, commonly known simply as WhatsApp, is an American social media, instant messaging (IM), and Voice over IP (VoIP) service accessible via desktop and mobile app. [13][14] Owned by Meta Platforms, the service allows users to send text messages, voice messages, and video messages, [15] make voice and video calls, and share images, documents, user locations, and other content. Hosted by WhatsApp 2026 © WhatsApp LLC Privacy & Terms WHAT meaning: 1. used to ask for information about people or things: 2. used in questions that show you are…. Learn more. Log in to WhatsApp Web for simple, reliable and private messaging on your desktop. Send and receive messages and files with ease, all for free. What time is it? The word “ what ” introduces the noun “time,” and is therefore considere d as a adjective. Definition: a. asking for information specifying something Example: What books did you buy? Adverb In some cases, the word “ what ” is considered as an adverb if it modifies a verb. For instance, in the sample sentence below: What does he care?.