noun
original source; source material
Computing term for the original data or document from which something is derived, such as source code or raw data.
このデータベースの原資料は公開されていない。
The original source of this database is not publicly available.
論文を書くときは、原資料を必ず確認して
When writing a paper, be sure to check the original sources.
Compound of 原 (original) and 資料 (materials, data). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.