Entry 1 sense Webster, 1913 Obstetrician /äbˌ-stət-rĭsh'-ən/ · Ob·ste·tri·cian · IPA /ˌɑbstəˈtɹɪʃən/ 01 n. One skilled in obstetrics; an accoucheur; especially, a physician who specializes in obstetrics. 1. One skilled in obstetrics; an accoucheur; especially, a physician who specializes in obstetrics.