There are multiple definitions:

1. subcommissural organ(English)

   • pineal organ
   • SCN

2. Sertoli cell only [syndrome](English)

   • describes a condition of the testes in which only Sertoli cells line the seminiferous tubules. Also called germ cell aplasia or Del Castillo syndrome
   • RTC
   • Andrology, Genitals
   • https://doi.org…72.2009.01030.x

3. stance control [knee-ankle foot] orthosis(English)

   • differs from their traditional locked knee counterparts by allowing free knee flexion during swing while providing stability during stance
   • KAFO, PCI
   • Musculoskeletal system, Prosthetics, Orthopedics
   • https://doi.org…093641003773189

4. Senior Care Options(English)

   • MIPPA, MSHO, SNP
   • Health insurance
   • https://doi.org…lthaff.28.1.136

5. subacute coronary occlusion(English)

   • a group that historically has not been well defined, are positioned in the gray zone between acute and chronic coronary syndromes. There is no standardized definition of SCO. These lesions typically represent a stage between acute occlusions and CTOs (100% occlusions of ≥3-month duration)
   • ACS, CABG, CAD, CCS, CTO, ECG, OMI, PCI, STEMI
   • Coronary circulation, Pathology
   • https://doi.org…heartj/ehaf1077