OPX may refer to:
Science edit
- OPX, a class of Martian meteorites
- Orthopyroxene, a type of rock-forming mineral
Technology edit
- Off-premises extension, an extension telephone
- Open Programming Extension, a DLL mechanism of the Open programming language
- Silver Xpress, a mail format used on FidoNet
This disambiguation page lists articles associated with the title OPX.
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