also: あぺんでぃくす
noun
Refers to supplementary material at the end of a book or document. A direct loan from English, used in academic or formal contexts.
レポートの最後にアペンディックスを付ける。
I attach an appendix at the end of the report.
詳細なデータはアペンディックスにまとめた。
The detailed data is compiled in the appendix.
Standard katakana spelling for the English loanword 'appendix'.
Variant katakana spelling; slightly less common but still used.
付録 is a more general Japanese word for a supplement or appendix, often used for magazines or books, while アペンディックス is a direct loanword typically used in academic or formal writing.
Borrowed from English 'appendix'.