1. Greek Mythology. A daughter of Priam, the king of Troy, endowed with the gift of prophecy but fated by Apollo never to be believed.
2. One that utters unheeded prophecies.

[Latin, from Greek Kassandra.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.