- HSI
HSI, a Three-Letter Acronym meaning:
*Hang Seng Index
*Horizontal Situation Indicator , an aircraft instrument combining navigation and heading information on one simplified display. Combining a CDI with a DG.
*Human Systems Integration - a discipline within systems engineering that incorporates human-related factors into total system life-cycle design considerations
*High Speed Input for microcontrollers
*High Speed Internet
*Hue, Saturation, Intensity Color Space
*High Speed Interconnect : a bridge chip designed by NVIDIA to make PCI Express chips available for the AGP slot, and vice-versa
*Health Sciences Institute : A website that advertises alternative medicine.
*Hispanic-Serving Institution
*Hot Surface Ignitor for gasfurnaces andhot water heater s.
*Habitat suitability index for formulating environmental models for species distribution
*Heat Stress Index : A relative index that evaluates how people respond to variable meteorological conditions.
*Hepato Somatic Index
*Human System Interaction
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