noun which may take the genitive case particle 'no'
Computing term describing a file or archive that can extract its own contents without a separate program.
このファイルは自動抽出形式なので、ダブルクリックするだけで解凍できます。
This file is in a self-extracting format, so you can decompress it just by double-clicking.
Compound of 自動 (automatic) and 抽出 (extraction).