From Wiktionary, the free dictionary
ObGyn (countable and uncountable, plural ObGyns)
- Alternative form of OB-GYN
2019 June 26, Eli Baden-Lasar, Susan Dominus, “A Family Portrait: Brothers, Sisters, Strangers”, in New York Times[1]:Until that moment, it had not really occurred to me — or my mothers, even though one is an ObGyn — that I might have half siblings out there.