There are multiple definitions:
oral contraceptive(English)
- most types use a combination of an estrogen and a progestin, with a theoretical efficacy > 99.9%, usually presented in 28-day packs, with pills for days 22 to 28 being inert. Preparations are monophasic, biphasic, or triphasic, depending on the relative amounts of estrogens and progestins, in an attempt to more closely mimic the natural menstrual cycle and limit the amount of hormone administered
- FSH, LH
- Woman /female, Gynecology, Hormone, Estrogen
- https://doi.org…48110-6.00036-3
open cholecystectomy(English)
- with intended mini-laparotomy cholecystectomy, is compatible with short hospital stay, evidence-based gall-bladder surgery, and training of surgical residents
- Biliary tract, Surgery
- https://doi.org…6/1471-2482-6-5
osteoclast(English)
osteocalcin(English)
- specific serum parameter of bone formation; aka bone gamma-carboxyglutamic acid-containing protein (BGLAP); also denoted as OCN or OCT
- BSAP, NTX, PICP, PTH, PYD, BAP, IGF-1
- Biomarker, Metabolism, Skeleton and bone (formation), Menopause
- https://doi.org…1038/sc.1992.56
- https://doi.org….1998.13.6.1051
- https://doi.org…061/2010/845180
optic cup(English)
- area in the center of the optic disc, excavatio disci (L)
- CDR, OD, OSAL, ONH
- Ophthalmology, Anatomy
- https://doi.org…mag.2019.101643
olfactory cleft(English)
orbital cellulitis(English)
- an elevated white cell count is suggestive for this diagnosis
- CRP, DNSOI, WCC
- Ophthalmology, Infection
- https://doi.org…30.2022.2087233
overall conformance(English)
- with respect to the mirrored contralateral or native zygoma
- CC, STFF
- Surgery
- https://doi.org…ogy.2021.105268
observed case(English)
ovarian cancer(English)
- a gynecological malignancy characterized by high morbidity and mortalities due to late-stage diagnosis because accurate early diagnostic biomarkers are lacking
- HBV, HCV, HIV, TWIST, HGSOC, BRCA, BRCAm, PARP, BUB1
- Ovary and uterus, Oncology, Gynecology
- https://doi.org…390/idr14030047
- https://doi.org…0428-014-1577-7
olive cake(English)
- refers to a diet
- VLDLR, SLC2A1, FABP3, SCD1, CD36, FA, LPL, OCS
- Nutrition, Veterinary medicine, Diet
- https://doi.org…/jds.2020-18235
oncocytic carcinoma(English)