What does HMO stand for?

Habitability Module Outfitting (SSD)

Hardware Microcode Optimizer

Hazard Mitigation Officer - Department of Emergency Management (DEMM)

Health Maintenance Organization

Heart Minute Output - Cardiology

Hermiston, OR - Amtrak Busline code

Hermosillo - Mexico - Airport symbol (OAG)

H. Mason - Oregon - Seismograph station code, US Geological Survey (SEIS)

Honolulu Magnetic Observatory (CINC)

Horizon Multi-Hull Inc., Fort Lauderdale, FL - Manufacturer code for watercraft hull identification number (USCG)

Housing Market Outlook (FOTI)

Hueckel Approximation for Molecular Orbitals (SAUS)

Hueckel Molecular Orbital - Atomic physics

Hypothethical Mean Organism (SAUS)

Northern Mashan Hmong - Language code (ETLW)