Gonadal Dysgenesis (GD)
Here's your citation in American Psychological Association (APA) format:
Gonadal Dysgenesis (GD). (n.d.). In Alleydog.com's online glossary. Retrieved from: https://www.alleydog.com/glossary/definition-cit.php?term=Gonadal+Dysgenesis+%28GD%29