👉 The term "subintroductory" is a phrase that refers to a book, article, or other text content that is not well-suited for immediate consumption. It typically includes materials such as scientific papers, technical manuals, and academic articles that are too long or complex to be easily consumed by the average reader. Subintroductory literature can include books, articles, reports, or any other type of written material that is less than a standard length and requires more time to read.