There are multiple definitions:

1. superluminescent diode(English)

   • source for OCT and SLO
   • OCT, SLO
   • Ophthalmology, Laser technique
   • https://doi.org…64/BOE.4.002307

2. severe learning difficulty(English)

   • ASD, NDD
   • Disability, Mental health, Pediatrics
   • https://doi.org…idd.2020.103688

3. specific learning disorders(English)

   • such as dyslexia and dyscalculia, are frequently studied to inform our understanding of cognitive development, genetic mechanisms and brain function
   • NDD
   • Cognitive function, Disability, Brain (dys)function
   • http://www.who.…cations/icf/en/
   • https://doi.org…94-007-0627-9_1

4. simple lymphatic drainage(English)

   • BCRL, CDT, LRE, MLD
   • Lymphatic system/lymphoma
   • https://doi.org…8.CD003475.pub2

5. SUMO-like domain(English)

   • SUMO
   • Biochemistry
   • https://doi.org…101.2014.956475