What does efi stand for?

Efik - MARC language code - Library of Congress (LCCP)

Eagle Fab Inc., Afton, OK - Manufacturer code for watercraft hull identification number (USCG)

Educational Forces Inventory (SAUS)

Educational Futures, Inc. (EA)

Efficient - Telegraphy (PCTE)

Electromechanical Frequency Interference (SAUS)

Electronic Facility Instruction (SAA)

Electronic Flash Illuminator

Electronic Flight Instruments (WDAA)

Electronic Fluid Injection (SAUS)

Electronic Fuel Injection (EAGT)

Electronic Funds Transfer (SAUS)

Electronics for Imaging (IID)

Electronics For Imaging, Inc (SAUS)

Embedded Figures Test (SAUS)

Emissary Foundation International (EA)

Energy Flow Information - A program (ESKOM)

Energy Frontiers International (EA)

Engineered, Furnished and Installed (SAUS)

Engineering Flight Test (SAUS)

Enrico Fermi Institute - University of Chicago

Environic Foundation International (EA)

Equestrian Federation of Ireland (EAIO)

Error Free Interval (NITA)

Error Function Integral (SAUS)

European Flight Information (SAUS)

European Forest Institute

Evangelical Friends International (EA)

Expedited Flow Indicator - Telecommunications

Expeditionary Force Institutions - Military - British

Exploding Foil Initiator (ACAE)

Export Financing Institution (FOTI)

Extensible Firmware Interface (CAL)