footnote Syllabification: (foot·note)Pronunciation: /ˈfo͝otˌnōt/Translate footnote | into French | into German | into Italian | into Spanish Definition of footnote noun an ancillary piece of information printed at the bottom of a page. a thing that is additional or less important:this incident seemed destined to become a mere footnote in history verb [with object] add a footnote or footnotes to (a piece of writing). footnote in other Oxford dictionaries Definition of footnote in the British & World English dictionary