Definition of permanents:
(adj) :
Lasting for an indefinitely long time.
(adj) :
Without end, eternal.
(n) :
A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.
(n) :
(collectible card games) A card whose effects persist beyond the turn on which it is played.
(n) :
(linear algebra, combinatorics) Given an n×n matrix a_ij,, the sum over all permutations π, of ∏ᵢ₌₁ⁿa_iπ(i).
(v) :
(transitive, dated) To perm (the hair).