AIabbr.1. airborne intercept2. Amnesty International3. aromatase inhibitor4. artificial insemination5. artificial intelligenceai (?)n. See sloth.[Portuguese, from Tupí a???, probably imitative of the vocalizations of sloths.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ai (????) n, pl ais (Animals) the three-toed sloth. See sloth1[C17: from Portuguese, from Tupi]ai the internet domain name for (Computer Science) Anguilla AI abbreviation for 1. (Veterinary Science) artificial insemination 2. (Computer Science) artificial intelligence Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014a?i (?? i) n., pl. a?is (?? iz) a sloth, Bradypus tridactylus, of tropical America, having three claws on each foot. [1685?95;