Il·i·ad (?l??-?d, -?d?)n. The older of the two surviving ancient Greek epic poems, traditionally ascribed to Homer but containing material composed orally over several centuries. It begins with the wrathful withdrawal of the Greek hero Achilles from the fighting in the Trojan War and ends after his return to slay the Trojan hero Hector.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.Iliad (??l??d) n (Poetry) a Greek epic poem describing the siege of Troy, attributed to Homer and probably composed before 700 bc Iliadic adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014Il?i?ad (??l i ?d) n. 1. (italics) a Greek epic poem describing the siege of Troy, ascribed to Homer. 2. (often l.c.) a long series of woes and travails. [