Related acronyms and abbreviations Share ION Internet Slang Abbreviation page Internet Slang ION abbreviation meaning defined here. What does ION stand for in Internet Slang? Get the top ION abbreviation related to Internet Slang. ION - Slang/Internet Slang What does ION stand for? Your abbreviation search returned 27 meanings showing only Slang/Internet Slang definitions ( Show all) Link/Page Citation Category Filters All definitions (27) Information Technology (7) Military & Government (2) Science & Medicine (11) Organizations, Schools, etc. (9) Business & Finance (1) WfuViE.