The meaning of the Acronym HSO is...

HSO is

• Homeostatic Soil Organisms
• Helping To Serve Others

More Meanings For HSO:

• Help Sunil Out
• Homeostatic Soil Organisms
• Helping To Serve Others
• Health and Safety Officer
• Health and Safety Officer

HSO is also in:

• Funnies
• Positions
• Unfiled
• US Government