Wiktionary
nonavailability
n. A lack of availability.
Usage examples of "nonavailability".
To put it technically, it is 'the nonavailability of energy in a closed thermodyamic system.
But the reason Leethveeschi gave for Horrantor still being here was the same as mine, the nonavailability of environmentally suitable transport.
It would be most unfortunate if the nonavailability of any of them made it impossible for me to accept the honor of the Sidemore command.
For another, the nonavailability, except in the most extreme circumstances, of submarines and aircraft.