What does HART stand for?

Cardiopulmonary Technologies (SAUS)

Halt All Racist Tours - British (DI)

Hardened Amplifier for Radiation Transients

Hartman - NCIC trailer make code

Hayden Analysis and Reporting Tool - Computer science

Heartland Wireless Communications, Inc. - NASDAQ symbol (SAG)

Height-Area Rain Threshold (SAUS)

Heparin-Aspirin Reinfarction Trial - Medicine (DMAA)

Heparin-Aspirin Reperfusion Trial - Cardiology

Heuristic Algorithmic Resource Timer (SAUO)

High Acceleration Rocket (SAUS)

High-Acceleration Rocket, Tactical (DNAB)

High Altitude Reconnaissance Technology (ACAE)

Highway Addressable Remote Transducer - Network protocol (READ)

Highway Advisory Radio Tactical (SAUO)

Highway Aid by Radio Truck (IAA)

Honolulu Area Rapid Transit (SAUO)

Hospital Access and Response Terminal - Health insurance

Hypervelocity Aircraft Rocket, Tactical

den Hartog - Botanist in plant scientific name (HUH)

Hartley's Digest of Texas Laws - A publication (DLA)

Hartley's Reports - 4-10 Texas - A publication (DLA)