Alphabetical Listing of Uncategorized Acronyms 2.5G — Second-and-a-half-generation Mobile Telephone System 2D — Two 2G — Second 3D — Three 3G — Third 3I — Investors In Industry (venture Capitalists) 3M — Minnesota Mining And Manufacturing Company 4D — Four-dimensional (usually Three Spatial Plus One Temporal Dimension 4G — Fourth-generation Mobile Telephone System 4GL — Fourth-generation Programming Language 4WD — …

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