era

C1 · Advanced Countable noun Science Technical

n. a very long period of time, lasting millions of years, used to describe the history of the Earth.

n. a major division of geological time, smaller than an eon and larger than a period, typically spanning hundreds of millions of years.

“Dinosaurs lived during the Mesozoic era, which lasted for about 180 million years.”

“The Paleozoic era is characterized by the rapid diversification of marine life and the eventual colonization of land by plants and animals.”

B1 · Intermediate Countable noun Informal

n. a time in your life when you are very interested in a specific thing or behave in a certain way.

n. a distinct, often temporary phase in an individual's life defined by a specific aesthetic, interest, or lifestyle choice.

“I went through a big jazz era in college where I only listened to old records.”

“Social media trends have popularized the concept of entering a 'villain era' or a 'healing era' to describe shifts in personal priorities.”