the GNU version of the Collaborative International Dictionary of English
adj. Incapable of being exhausted, emptied, or used up; unfailing; not to be wasted or spent
The Century Dictionary and Cyclopedia
Not exhaustible; incapable of being exhausted, spent, or wearied; unfailing: as, an inexhaustible supply of water; inexhaustible patience.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. incapable of being entirely consumed or used up
adj. that cannot be entirely consumed or used up
Word Usage
"By doing so, you made it possible for nitrogen to be made available to mankind in inexhaustible quantities, in a form suitable for agriculture, and even at lower prices than hitherto."