Jurassic/dʒʊˈræsɪk/ Definition 1 of 2Pro Tip 1/3Time Specific Refers to things specific to the Jurassic period, not general ancient times. They discovered Jurassic plant fossils, not just old fossils. Pro Tip 2/3Prehistoric Era Indicates prehistoric times, often associated with dinosaurs and early life forms. The movie featured Jurassic landscapes with towering dinosaurs. Pro Tip 3/3Cultural Reference Jurassic is used in pop culture to evoke thoughts of dinosaurs and ancient creatures. The 'Jurassic Park' franchise made the era popular.