v. ex·haust·ed, ex·haust·ing, ex·hausts
1. To make extremely weary; wear out. See Synonyms at tire1.
a. To remove a resource from; deplete: tobacco crops that exhausted the soil of nutrients.
b. To use up completely: a costly project that exhausted our funds. See Synonyms at deplete.
3. To discuss or treat completely; cover thoroughly: exhaust a topic.
a. To let out the contents of (a container); cause or allow to escape: a leak that exhausted the air tank.
b. To let out or draw off (a gas, for example) from a container.
To escape or pass out: Steam exhausts through this valve.
a. The escape or release of vaporous waste material, as from an engine.
b. The fumes or gases so released.
2. A duct or pipe through which waste material is emitted.
3. An apparatus for drawing out noxious air or waste material by means of a partial vacuum.
[Latin exhaurīre, exhaust- : ex-, ex- + haurīre, to draw.]
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.