ap·ne·a also ap·noe·a (ăpnē-ə, ăp-nēə)
Temporary absence or voluntary cessation of breathing.
[New Latin apnoea, from Greek apnoia : a-, without; see A-1 + pnoiā, -pnoia, breathing (from pnein, to breathe; see pneu- in the Appendix of Indo-European roots).]
ap·neic adj. & n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. 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.