1. Impossible to see; not visible: Air is invisible.
2. Not accessible to view; hidden: mountain peaks invisible in the fog.
3. Not easily noticed or detected; inconspicuous: "The poor are politically invisible" (Michael Harrington).
4. Not published in financial statements: an invisible asset.
One that is invisible.
in·vis′i·bili·ty, in·visi·ble·ness n.
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.