from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The quality or condition of being impenetrable.
- n. The inability of two bodies to occupy the same space at the same time.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The characteristic of being impenetrable; invulnerability.
from the GNU version of the Collaborative International Dictionary of English
- n. Quality of being impenetrable.
- n. That property in virtue of which two portions of matter can not at the same time occupy the same portion of space.
- n. Insusceptibility of intellectual or emotional impression; obtuseness; stupidity; coldness.
from The Century Dictionary and Cyclopedia
- n. The character or condition of being impenetrable; incapability of being penetrated, in any sense of that word.
- n. In physics, specifically, that property of matter which prevents two bodies from occupying the same space at the same time; that property of matter by which it excludes all other matter from the space it occupies.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the quality of being impenetrable (by people or light or missiles etc.)
- n. incomprehensibility by virtue of being too dense to understand
Sorry, no etymologies found.