mastering
1. [ noun ] (psychology,education) becoming proficient in the use of something; having mastery of
Examples:

"his mastering the art of cooking took a long time"

Related terms: education master
2. [ noun ] the act of making a master recording from which copies can be made
Examples:

"he received a bill for mastering the concert and making 100 copies"

Related terms: recording
Similar spelling:   master
  masseter
  Masterman
  Masterson
  mastermind
  mastery
  Masters
  Mastroianni
  master_plan
  Mastrangelo
  mastered
  masterly
  muster_in
  masterful
  Mastro
  mastership
  masterless
  masterwort
  master_key
  masterfully
  master_race
  master_file
  master_copy
  Mastronardi
  masterpiece
  Maestre