noun
Refers to a person who writes and submits articles, manuscripts, or other written content to a publication, such as a magazine, newspaper, or journal.
彼はその雑誌の寄稿者として定期的に記事を書いている。
He regularly writes articles as a contributor to that magazine.
Compound of 寄稿 (contribution of a manuscript) + 者 (person). The exact historical derivation is straightforward; the word follows a common pattern for agent nouns.