There are multiple definitions:

1. Harvard Medical School(English)

   • in Boston (USA)
   • IHI, MGH, BWH, HMPA
   • Education, Hospital
   • https://hms.harvard.edu/

2. horizontal myoseptum(English)

   • connective tissue partition developing at the apex of the chevron-shaped myotome and separating dorsal (epaxial) and ventral (hypaxial) body wall muscle masses
   • Anatomy
   • https://zfin.or…ail/ZFA:0001089

3. hydrogel microsphere(English)

   • CMS, HUVEC
   • Skeleton and bone (formation)
   • https://doi.org…/smll.202006596

4. Hydrus microstent(English)

   • IOP, DIOP, MDIOP, NMS, POAG
   • Ophthalmology
   • https://doi.org…tha.2018.05.012

5. human mammary stromal [cell](English)

   • HME, LFS, TP53
   • Mammary gland, Anatomy
   • https://doi.org…cotarget.101004