1. to fit or install equipment, parts, or modifications to an existing structure or system, especially one that was not originally designed for them
Usage: often used in engineering, construction, and automotive contexts

Examples

• The building was backfitted with modern air conditioning units.
• Engineers decided to backfit the older vehicles with new safety features.
• The factory backfitted its production line with automated systems.
• They backfitted the house with solar panels to reduce energy costs.
• The ship was backfitted with updated navigation equipment.