Aes·chy·lus (?s?k?-l?s, ??sk?-) 525-456 bc. Greek tragic dramatist whose plays were the first to include two actors in addition to the chorus. Only 7 of his 90 dramas survive, including the Oresteia trilogy (458).Aes?chy·le?an (-l???n) adj.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.Aeschylus (?i?sk?l?s) n (Biography) ?525??456 bc, Greek dramatist, regarded as the father of Greek tragedy. Seven of his plays are extant, including Seven Against Thebes, The Persians, Prometheus Bound, and the trilogy of the Oresteia Aeschylean adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Aes?chy?lus (??s k? l?s) n. 525?456 B.C., Greek poet and playwright. Aes`chy?le?an, adj. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.