Pristine means perfectly clean, pure, or untouched, as if nothing has ever damaged or dirtied it. When you open a brand new book and see its crisp white pages that no one has ever read, those pages are pristine. A pristine baseball field before the first game of the season has perfectly smooth dirt and freshly painted lines.

The word often describes nature that humans haven't altered: a pristine forest where trees grow wild and streams run clear, or a pristine beach with smooth sand unmarked by footprints. Scientists searching for pristine environments might hike deep into wilderness areas to study ecosystems exactly as they've existed for thousands of years.

You can also use pristine for things kept in perfect condition through careful effort. A collector might keep vintage comic books in pristine condition, protecting them from tears, stains, or bent corners. Someone might restore an old car to pristine condition, making it look exactly like it did when it first rolled off the factory floor.

The word carries a sense of something special and rare. Most things in daily life show some wear and tear, but pristine objects or places remain flawless. When something is pristine, there's often a desire to keep it that way, whether it's a museum's pristine artifact or pristine snow on a mountain before anyone skis down it.