Hierarchical File System
Horizontal Flight Simulator
hardware functionality scan
Hartree-Fock-Slater
Health and Family Services
High Fidelity Simulator
Holy Fucking Shit
Human Factors Society
hair follicles
hand-foot syndrome
Health Fitness Specialist
helper factor supernates
Hemifacial spasm
Hierachical File System
Hierarchical File Storage
High Fidelity Sound
high-fat sucrose
High-Field Superconductor
high-frequency electrical stimulation
High-Frequency Sparking
high-frequency stimulation
High-Frequency System
High-performance File System
Holy Family School
Hoos for Startups
Hospital Financial Support
Host File System
hot flashes
HotFax Share
Housing Flow Statistics