There are multiple definitions:

1. vital signs [are] stable(English)

   • e.g. heart rate and blood pressure
   • Physical examination, Diagnostics, Emergency medicine

2. videofluoroscopic swallow study(English)

   • Fluorescence, Gastroenterology, Mouth, esophagus and stomach

3. Vancouver scar scale(English)

   • burn scar index that is widely used in clinical practice and research to document change in scar appearance
   • MSS, POSAS, FBSA
   • Wound care, Scoring systems/scales, Post-traumatic state
   • https://doi.org…199509000-00013

4. vapor-solid-solid(English)

   • VLS, TEM
   • Nano-sciences
   • https://doi.org…science.1139105