There are multiple definitions:

1. magnitude spectral subtraction(English)

   • PSS
   • Signal analysis

2. Marshall-Smith syndrome(English)

   • Weaver-Smith syndrome
   • Congenital disorders
   • https://marshallsmith.org/en/
   • https://raredis…-smith-syndrome

3. maximum systolic slope(English)

   • MDS
   • Cardiology

4. multi-level semantic supervision [module](English)

5. Manchester scar scale(English)

   • a multi-item categorical scale, with a global scar assessment made with a visual analogue scale (VAS). This scale includes descriptors of greater clinical significance, such as contour (flush, indented, hypertrophic, or keloid) as opposed to physical measurements
   • POSAS, VSS, VAS
   • Wound care, Scoring systems/scales
   • https://doi.org…urg.2021.643098

6. maternal serum screening(English)

   • may refer to detection of triploidy in a fetus following amniocentesis
   • AFP, HCG, uE3
   • Screening, Pregnancy
   • https://doi.org…0971-6866.69371