Wordnet polsko-angielski 
                        
1. (the property of lasting for a very short time) 
ephemerality, ephemeralness, fleetingness 
2. (having the consistency of a gas) 
gaseousness: : synonim: lotność
Otwarty słownik polsko-angielski V.9.2007, Copyright (c) Jerzy Kazojć - 2007 r.
                        elusiveness
fleetness
volatility