Ovum: An egg within the ovary of the female. An ovum can combine with sperm to form a zygote. SLIDESHOW Fertility Options: Types, Treatments, and Costs See Slideshow From Healthy Resources Common Causes of InfertilityWhich Infertility Treatment is for You?Sex and Headaches: What's the Link? Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19
