The meaning of the Acronym HL is...

HL is

• Heavy Liquid
• Half Life

More Meanings For HL:

• Hashed List
• Heavy Liquid
• Half Life
• Hurricane Landcrash
• Heat Loss
• Happiness Level
• Habs Lampoon
• Membership Hot Line
• Hamilton Library
• Harry Larry
• Haptic Library
• Hitachi Lg
• High Lanuch
• Heilmann And Lieb
• Hemp Laced

HL is also in:

• Chemistry
• Funnies
• General
• Meteorology
• Physics
• Toastmasters
• Unfiled
• Universities