There are multiple definitions:

1. local signal subspace(English)

2. low shear stress(English)

   • HSS, OSS, TSM

3. lumbo-sacral spine(English)

   • CSD, OSD, SD, USG
   • Spine (or spinal cord)
   • https://doi.org…055-022-00722-2

4. Life Satisfaction Scale(English)

   • EPSILON, LQoLP
   • Scoring systems/scales, Quality of life, Psychiatry
   • https://doi.org…/bjp.177.39.s49

5. Life Span Study(English)

   • atomic bomb survivors consistently demonstrate significant excess radiation-related risks of liver cancer since the first cancer incidence report
   • EAR, ERR
   • Radiotherapy /radiation, Military medicine
   • https://doi.org…ysiolres.935066