There are multiple definitions:

1. uniaxial ankle(English)

2. uterine activity(English)

   • Obstetrics, Ovary and uterus

3. urinalysis(English)

   • Clinical chemistry, Nephrology

4. unstable angina(English)

   • see Braunwald classification
   • AAR
   • Cardiology, Classification

5. uric acid(English)

   • the major origin of gout. Also enhances the decidualization response of endometrial stromal cells, via the upregulation of inflammatory genes. High level of uric acid is highly associated with various pregnant complications, such as preeclampsia and gestational diabetes
   • IL-17, IL-18, IAP, NAIP, NLR, NLRP3, COX-2, MSU, XDH, sUA, ULT, ACR, ASC, BIR, CARD, CARD8, CKD, CNV, DNMT, EULAR, GWAS, IL-12
   • Risk factor, Pregnancy, Cardiology
   • https://doi.org…ell.2021.702590
   • https://doi.org…39.2023.2168554

6. umbilical artery(English)

   • AEDF, MCA-REDF, REDF, FGR
   • Pregnancy, Doppler technique
   • https://doi.org…2243(94)90217-8
   • https://doi.org…51829-3.00011-8

7. upper airway(English)

   • treatment success of sleep apnea with oral appliance therapy appears to depend not only on anterior titration of the mandibular position to enlarge the UA, but also on the amount of change in the size of the UA in response to mandibular advancement
   • AHI, OSA
   • Respiratory system, Sleep medicine, Dentistry
   • https://doi.org…odo.2003.05.006

8. urobilin A(English)

   • a metabolite of intestinal bacteria, that inhibits cell proliferation and migration through destroying the activities of Rac1 and PAK1
   • P29s, Rac1
   • Oncology
   • https://doi.org…onc.2021.674426

9. universal adhesive(English)

   • AO, EDTA, RBC, SB, TBS
   • Dentistry, Materials science
   • https://doi.org…0/ijms241411568

10. ulnar artery(English)

    • BMI, CAD, CRA, DRA, DRA/CRA
    • Anatomy, Vessel properties, Ultrasound, Gender aspects
    • https://doi.org…297298241250263