Human Development Index

Community » Educational

Harley Davidson, Inc.

Business » NYSE Symbols

High Definition Imaging

Community » Media

High Density Interconnection

Internet

Head To Disk Interference

Governmental » Military

Hitachi Debugging Interface

Computing » Software

Hexamethylene Di Isocyanate

Academic & Science » Chemistry

Health Development International

Community » Non-Profit Organizations

Help Desk Internal

Computing » General

Host Defenses And Infection

Medical » Physiology

Harley Davidson International

Business » Firms

Half Duplex Interface

Computing » Networking

Hard Drive Indicator

Computing » Hardware

Help Desk Institute

Business » Professional Organizations

Headache Disability Index

Medical

Human Development Index

Governmental » Politics