practitioner

practitioner
/prækˈtɪʃənə(r); præk`tɪʃənɚ/ (also practician) n
1 person who practises a skill or an art 习艺者; 实习者.
2 person who practises a profession, esp medicine 从业者; （尤指）行医者
    a general practitioner 全科医生.

牛津英汉双解词典