The meaning of the Acronym HM is...

HM is

• Heart Murmur
• Hand Movements
• Hyper Madness

More Meanings For HM:

• Hydrography and Meteorology
• High Modulation
• Homestake Mining Company
• History Makers
• Head Madam
• HeadMaster
• Howling Mad
• House Mate
• Heavy Metal
• Hidden Music
• Hard Music
• Headbangin Moshpit
• Hawk Mountain
• Honorary Member
• Honor Match

HM is also in:

• Academic Degrees
• Electronics
• Famous
• Housing
• Music
• Non-Profit Organizations
• NYSE Symbols
• Positions
• Sports