DIA(redirected from DIAPH2)
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DIA(1) See Ethernet DIA.
(2) (Document Interchange Architecture) An IBM SNA format used to exchange documents from dissimilar machines within an LU 6.2 session. It acted as an envelope to hold the document and did not set any standards for the content of the document, such as layout settings or graphics standards.
On drawings, abbr. for “diameter.”