Definition of "permanent" in English

adjective

1. Without end, eternal.

   • Nothing in this world is truly permanent.

2. Lasting for an indefinitely long time.

   • The countries are now locked in a permanent state of conflict.

noun

1. A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.

2. (linear algebra, combinatorics) Given an n×n matrix a_ij,, the sum over all permutations π, of ∏ᵢ₌₁ⁿa_iπ(i).

3. (collectible card games) A card whose effects persist beyond the turn on which it is played.

verb

1. (transitive, dated) To perm (the hair).