Id. definitions

ID.

Idem, Idus, Interdum.
Found on http://www.translationdirectory.com/glossaries/glossary113.htm

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id.

idem; id. The same. The same word, the same author, or the same publication.
Found on http://www.wordinfo.info/words/index/info/view_unit/3471/

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id.

(idem) the same author (as previously referenced) - an academic space-saving device used in citing authors
Found on https://www.businessballs.com/glossaries-and-terminology/latin-terms-and-ph

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id.

Abbreviation for idem (Latin `the same`), used in reference citation
Found on https://www.encyclo.co.uk/local/21221

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