The meaning of the Acronym FFD is...

FFD is

• First Fixation Duration

More Meanings For FFD:

• Free Form Deformation
• First Fixation Duration
• First Fit Decreasing
• Free From Disability
• Fairfield Communities, Inc.
• Fighting Force Diablo
• Fit For Full Duty
• Fixed Format Display
• Functional Flow Diagram

FFD is also in:

• Astronomy
• Mathematics
• Military
• NASA
• NYSE Symbols
• Physiology
• Software