IPA: //nɒnˈfɪkʃən//
KK: /nɑnˈfɪkʃən/
A type of writing that is based on real events, people, and facts, rather than made-up stories.
She prefers reading nonfiction books about history and science.
Nonfiction is formed from "non-" (meaning not) and "fiction" (from Latin "fictio", meaning the act of making or shaping). The word refers to works that are not made up, but rather based on real events or facts.
Think of 'non-' meaning not, and 'fiction' referring to something made up. This helps you remember that nonfiction is about things that are not made up, but based on reality.