Definitions

1. noun

a permanent hairstyle, typically achieved by chemical treatment of the hair

“She got a perm to change her hairstyle for the summer.”

2. verb

to give a permanent hairstyle to (someone’s hair)

“The stylist decided to perm his hair to add some texture.”

3. verb

to make (something) permanent or lasting

“The company decided to perm the changes to their business strategy.”