1. Greek Mythology The son of Daedalus who, in escaping from Crete on artificial wings made for him by his father, flew so close to the sun that the wax with which his wings were fastened melted, and he fell into the Aegean Sea.
2. An asteroid with an eccentric orbit approaching within 30 million kilometers (19 million miles) of the sun.
[Latin Īcarus, from Greek Īkaros.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.