permanents

Noun

permanent (plural permanents)

1. A chemical hair treatment imparting or removing curliness, whose effects typically last for a period of weeks; a perm.
   • She had pewter-coloured hair set in a ruthless permanent, a hard beak and large moist eyes with the sympathetic expression of wet stones.1943, Raymond Chandler, The High Window, Penguin, published 2005, page 8
2. 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.

See all 6 meanings of permanent