There are multiple definitions:

1. health maintenance organization(English)

   • PPO
   • Health care, Organizations (clinical)

2. hypothetical mean organism(English)

3. human milk oligosaccharide(English)

   • believed to have a range of biological activities beyond providing nutrition to the infant
   • GOS, B-GOS, BEGIN, LMIC, HMO, NICHD
   • Nutrition, Biotechnology, Neonatology
   • https://doi.org…bio.2013.01.008
   • https://doi.org…nut.2022.12.020