What does EXA stand for?

Albion College, Albion, MI - OCLC symbol (OCLC)

Excalibur - NCIC firearms make code (NCIC)

Excel Craft Boat Manufacturing, Cusick, WA - Manufacturer code for watercraft hull identification number (USCG)

Execaire Aviation Ltd. - Canada - ICAO designator (FAAC)

Executing Agency Identifier (CINC)

Exmar Resources Ltd. - Vancouver Stock Exchange symbol

Extra - Telegraphy (PCTE)

Extract - Telegraphy (PCTE)

Lehman Brothers, Inc. - AMEX symbol (SAG)