There are multiple definitions:

1. geometric surface area(English)

2. gene set analysis(English)

   • GSEA
   • Genetics

3. Gerontological Society of America(English)

   • Gerontology/Geriatrics, Organizations (documentation)

4. global screening array(English)

   • Genomics, Screening

5. global sagittal alignment / axis(English)

   • a simple, novel measure to assess the standing axis of the human body in the sagittal plane. The GSA correlates highly with spinopelvic and lower-extremities sagittal parameters and exhibites remarkable correlations with HRQoL
   • HRQoL, ODI, PI, SVA, TPA, VAS, CBVA, BKP, OVCF
   • Anatomy, Biophysics, Spine (or spinal cord)
   • https://doi.org…6.2.SPINE151311
   • https://doi.org…586-022-07479-2

6. general social anxiety(English)

   • SAD, SIAS, SPS
   • Anxiety/fear, Social aspects
   • https://doi.org…psyg.2017.00070