/peuhr sis"teuhns, -zis"-/ , n.
1. the act or fact of persisting.
2. the quality of being persistent: You have persistence, I'll say that for you.
3. continued existence or occurrence: the persistence of smallpox.
4. the continuance of an effect after its cause is removed.
Also, persistency .
[ 1540-50; PERSIST + -ENCE ]
Syn. 1. See perseverance .