| Object Permanence |
A key part of cognitive development when a baby understands that an object still exists even though it is not necessarily in sight. |
| Obstetrician/Gynecologist (OB/GYN) |
Physician who specializes in women's reproductive health issues, both medically and surgically. |
| Oligospermia |
A fertility problem referring to low sperm count. |
| Orchioectomy |
Surgical procedure where a boy's testes are removed due to failure to descend. |
| Orchiopexy |
An operation to bring down both undescended testes. |
| Orchitis |
Inflammation of the testes in association with an infection such as mumps. |
| Orthopedic Disabilities |
A physical condition which affects mobility and development of motor skills. |
Otitis Media
(Ear Infection) |
An infection that fills the inner ear with fluid. Usually a secondary infection following a cold. |
Otolaryngologist
(Otorhinolaryngologist, Ear-Nose-Throat Doctor, or ENT) |
Physician who specializes in ear, nose, and throat conditions, including surgery. |
| Ovaries |
A pair of gonads that produce key female hormones and eggs and are found on either side of the uterus. |
| Ovulation |
When a mature egg is released from the ovaries into the Fallopian tubes -- the time when a woman is most likely to conceive. |
MoonDragon's Pregnancy Information: Pregnancy Information & Survival Tips