必修

bìxiū
  1. (of an academic course) required
  2. compulsory

CEDICT

Entry Composition

1 必 bì
  1. certainly
  2. must
  3. will
  4. necessarily
=2 修 xiū
  1. to decorate
  2. to embellish
  3. to repair
  4. to build
  5. to write
  6. to cultivate
  7. to study
  8. to take (a class)
=2 修 xiū variant of 修 xiū