1 of 3


ˈī How to pronounce ai (audio)
plural ais
: three-toed sloth
A sloth is a slow-moving arboreal (tree-dwelling) mammal and the name ai was given to this creature because of its high-pitched screech.Al Perkins
Three-toed sloth is a common crossword puzzle clue for the word "ai."Marty Noble


2 of 3

abbreviation or noun

variants or less commonly A.I.
plural AIs also A.I.s
: artificial intelligence
the field of AI
AI research
… her lifelike appearance makes her impressive, but even Sophia [a robot] isn't demonstrating true AI. She's not autonomous, and can't make her own decisions.Brian Wang
: software designed to imitate aspects of intelligent human behavior
Consumers are already comfortable with the use of AI in many of the technologies we use daily.Ophir Tanz and Cindy Roark
The immediate danger, he said, was A.I.'s ability to create convincing false photos, videos and audio—showing things that didn't happen or weren't done by the people seen or heard in the generated content.Adrian Humphreys
also : an individual program or set of programs designed in this way
You have the option of facing an AI or another player online to test your skills … John Bradbury
To tell a picture of a cat from a dog, for example, an AI needs to sift through a huge trove of images. Sherryn Groch and Tim Biggs
AIs can learn and mimic certain biases if their training data sets are not diverse enough. Jeremy Hsu
an AI system
AI chatbots
: something (such as a robot) that operates by means of AI software
The Tesla CEO also shared the timeline of the Tesla bot, offering a release window to those interested in having the humanoid AI.Nica Osorio

see also generative AI


3 of 3


ad interim
airborne intercept
air interception
artificial insemination

Examples of ai in a Sentence

Recent Examples on the Web
Abbreviation or noun
Without calling out a specific incident, Google CEO Sundar Pichai indicated in a Thursday blog post that employees will be on a short leash as the company intensifies its efforts to improve its AI technology at a pivotal moment in the industry and, potentially, humanity. Michael Liedtke, Quartz, 18 Apr. 2024 What her subordinates needed to work on came from her own prompts; the rest came from AI. Christiaan Hetzner, Fortune, 18 Apr. 2024 For its part, Microsoft has also been actively on the lookout for more partnerships with burgeoning AI firms, earlier this year announcing a $16 million partnership with French tech firm Mistral AI. Samuel Stolton, Fortune Europe, 18 Apr. 2024 Each year, engineers, programmers, and scientists will come together to develop leading-edge driving AI, ready to compete in a series of challenges and claim their stake in a multi-million-dollar prize pool. Charlotte Observer, 18 Apr. 2024 The tech giant has helped organize four separate coalitions to devise guidelines and technical standards for AI in health care. Casey Ross and Brittany Trang, STAT, 18 Apr. 2024 Under the deal, singers would have to give their consent before a label could use AI to generate a track with their voice. Gene Maddaus, Variety, 18 Apr. 2024 Basic Agreement negotiations, which are expected to include AI, pension and health funding, and other major issues, are scheduled to begin April 29. Carolyn Giardina, Variety, 6 Apr. 2024 And with companies releasing new AI chips every year to handle new generative-AI systems, Klauer said semiconductor equipment is going to become increasingly sophisticated, which should benefit incumbent firms like ASM Lithography. Will Daniel, Fortune, 6 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ai.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



borrowed from Portuguese "sloth (the animal)," borrowed from Tupi aɨ́

Note: The Tupi form is based on that given by Aryon Rodrigues in "Contribuição para a etimologia dos brasileirismos," Revista Portuguesa de Filologia, vol. 9, I-II (1958-59), p. 14. The word can be found with various spellings in a number of early sources: André Thevet, Les singularitez de la France Antarctique, 1558 (Haü, Haüthi); Jean de Léry, Histoire d'un voyage faict en la terre du Bresil, 1578 (Hay); letter of José de Anchieta, 1560, in Serafim Leite, editor, Cartas dos primeiros Jesuítas do Brasil, vol. 3 [1958], p. 222, cited in Antônio Geraldo da Cunha, Dicionário histórico das palavras portuguesas de origem tupi, São Paulo, 1978 ("Est aliud animal quod Indi aig, nos propter nimiam tarditatem pigritiam dicimus" — "There is another animal that the Indians call aig, that we call on account of its excessive slowness the sloth"); Gabriel Soares de Sousa, Tratado descritivo do Brasil, 1587 (ahy).

First Known Use


1625, in the meaning defined above

Abbreviation Or Noun

1963, in the meaning defined at sense 1

Time Traveler
The first known use of ai was in 1625

Dictionary Entries Near ai

Cite this Entry

“Ai.” Dictionary, Merriam-Webster, Accessed 25 Apr. 2024.

Medical Definition


artificial insemination

More from Merriam-Webster on ai

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!