Definitions

1. adjective

relating to or characteristic of the Mesozoic Era, a geologic era from about 252 to 66 million years ago

“The dinosaur fossils found in the rock formation are a testament to the mesozoic era’s rich biodiversity.”

2. noun

a geologic era of the Earth’s history, characterized by the existence of dinosaurs

“The museum exhibit focuses on the Mesozoic, an era of great change and upheaval on Earth.”

3. proper noun

a geologic era that includes the Triassic, Jurassic, and Cretaceous periods

“The Mesozoic is often referred to as the age of dinosaurs.”