artificial intelligence (AI), the ability of a digital computer or computer-controlled robot to perform tasks commonly associated with intelligent beings. Clear and simple definitions in American English from Britannica's language experts. More usage examples than any other dictionary. Find definitions for over 300,000 words from the most authoritative English dictionary. Continuously updated with new words and meanings. The world's leading online dictionary: English definitions, synonyms, word origins, example sentences, word games, and more. A trusted authority for 25+ years! DEFINITION definition: the act of defining, or of making something definite, distinct, or clear. See examples of definition used in a sentence. Is it raining, or snowing, or what? Is this exciting, or what? A clever play, what? What you need is a vacation. What angered us was the tone of the article. What does he care? … what with the war, what with the sweat, what with the gallows, and what with poverty, I am custom-shrunk. William Shakespeare. What minerals do we export? What mountains! pronunciation note: Usually pronounced (hwɒt ) for meanings [sense 2], [sense 4], [sense 5] and [sense 18]. You use what in questions when you ask for specific information about something that you do not know. What do you want? What did she tell you, anyway? 'Has something happened?'—'Indeed it has.'—'What?' Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters. Can be thought of as Either less than or greater than , which implies not equal. Chris Parker, founder of WhatIsMyIPAddress.com, has spent decades helping millions of people understand and protect their online privacy. Now he's put everything he knows into one practical guide.