There are multiple definitions:

1. oval window(English)

   • CC, FN, JB, RW, RWM, CAOW
   • Audiology, Anatomy
   • https://doi.org…orl.2018.03.009
   • https://doi.org…000000000004182

2. overweight(English)

   • NW, OB, PA
   • Pregnancy, Diet, Exercise & Training
   • https://doi.org…med.2013.02.021

3. opening-wedge(English)

   • CW, HTO, OA, TKA
   • Orthopedics, Knee
   • https://doi.org…tsr.2017.07.011