permanent in Bulgarian
permanent in Bulgarian
безкраен
Without end, eternal.
постоя́нен
Without end, eternal.
дълготраен
Lasting for an indefinitely long time.
трайно къдрене
A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.
перманент
(linear algebra, combinatorics) Given an n \times n matrix a_{ij} \,, the sum over all permutations \pi \, of \prod_{i=1}^n{a_{i\pi(i)}}.