O
- obesity (ō-BĒ-sĭt-ē):
- Abnormal increase in the proportion of fat cells resulting in excess body weight for height.
- obstetrician (ob-stĕ-TRISH-ăn):
- The person who specializes in the study of obstetrics and gynecology and are referred to as OB/GYN Obstetrics and Gynecology.
- Obstetrics (ŏb-STE-triks):
- Medical specialty dealing with pregnancy, childbirth, and puerperium.
- occipital lobe (ok-SIP-ĭt-ăl lōb):
- Region of the cerebral cortex directly beneath the occipital bone of the cranium.
- occlude (ŏ-KLOOD):
- Block or close tightly.
- oculomycosis (ŏk-ū-lō-mī-KŌ-sĭs):
- Abnormal condition of the eye caused by a fungus.
- olfaction (ŏl-FĂK-shŭn):
- Special sense responsible for smell, which has a unique, direct connection to the cerebrum.
- oligodendrocyte (ol-ĭ-gō-DEN-drŏ-sīt):
- Glial cell type in the CNS that provides the myelin insulation for axons in tracts.
- oligohydramnios (ŏl-ĭg-ō-hī-DRĂM-nē-ōs):
- A condition where there is minimal amniotic fluid within the placental sac. Too little fluid can restrict the fetus from movement and growth.
- oligomenorrhea (ŏl-ĭ-gō-mĕn-ō-RĒ-ă):
- Infrequent or irregular periods.
- oligoovulation (ol-i-gō-ov-yŭ-LĀ-shŏn):
- Infrequent ovulation.
- oligospermia (ŏl-ĭ-gō-SPĔR-mē-ă):
- Condition of scanty sperm.
- oliguria (ŏl-ĭg-Ū-rē-ă):
- Scanty urine (output).
- omentum (ō-MENT-ŭm):
- Fatty tissue that stretches over the abdomen, plays a role in immune response and the growth of certain cancers.
- omphalitis (ŏm-făl-Ī-tĭs):
- Inflammation of the umbilicus.
- omphalocele (ŏm-FĂL-ō-sēl):
- Herniation of the umbilicus.
- onychocryptosis (ŏn-ĭ-kō-krip-TŌ-sis):
- Abnormal condition of a hidden nail.
- onychomalacia (ŏn-ĭ-kō-mă-LĀ-shă):
- Softening of the nails.
- onychomycosis (on-i-kō-mī-KŌ-sĭs):
- Abnormal condition of a fungus in the nails.
- onychophagia (ŏn-ĭ-KŎF-ă-jē):
- Eating the nails (nail biting).
- oocyte (Ō-ŏ-sīt):
- Female gamete.
- oophorectomy (ō-ŏ-fŏ-REK-tŏ-mē):
- Surgical removal of the fallopian/uterine tubes.
- oophoritis (ō-ŏf-ō-RĪ-tĭs):
- Inflammation of the ovary.
- ophthalmalgia (ŏf-thăl-MĂL-jē-ă):
- Pain in the eye.
- ophthalmia neonatorum (of-THAL-mē-ă nē-ŏ-NĂ-tōr-ăm):
- Conjunctivitis in newborns (severe).
- ophthalmic (of-THAL-mik):
- Pertaining to the eye.
- ophthalmologist (ŏf-thăl-MŎL-ō-jĭst):
- Specialist of the eye.
- ophthalmology (Ophth) (ŏf-thăl-MŎL-ō-jē):
- Study of the eye.
- ophthalmopathy (ŏf-thăl-MŎP-ă-thē):
- Disease of the eye.
- ophthalmoplegia (of-thal-mō-PLĒ-j(ē-)ă):
- Paralysis of the eye.
- ophthalmoscope (of-THAL-mŏ-skōp):
- Instrument used to view the eye.
- ophthalmoscopy (of-thal-MOS-kŏ-pē):
- Process of viewing the eye.
- opsonization (ŏp-să-nĭ-ZĀ-shŭn):
- An antibody or an antimicrobial protein binds to a pathogen, thereby marking it as a target for phagocytes.
- optic (OP-tik):
- Pertaining to vision.
- Optician (ŏp-TĬSH-ăn):
- Specialist who fills prescriptions for lenses but cannot prescribe.
- Optometrist (ŏp-TŎM-ĕ-trĭst):
- Specialist who diag