perm /pɜːm/ ( perming, permed, perms )

• 1. 

  N-COUNT If you have a perm, your hair is curled and treated with chemicals so that it stays curly for several months. 烫的卷发

  例：

  ...a middle-aged lady with a perm.

  …一位烫卷发的中年女士。

• 2. 

  V-T When a hairstylist perms someone's hair, they curl it and treat it with chemicals so that it stays curly for several months. 烫 (卷发)

  例：

  She had her hair permed.

  她烫了卷发。

• 3. 

  N permutation的缩写 → short for permutation