A decrease in the blood supply to a bodily organ, tissue, or part caused by constriction or obstruction of the blood vessels.
[New Latin ischaemia, from Greek iskhaimos, a stopping of the blood : iskhein, to keep back; see segh- in the Appendix of Indo-European roots + haima, blood.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.