<p><strong>Noun</strong></p><ul><li>a period of time marked by distinctive character, events, etc.: The use of steam for power marked the beginning of an era.</li><li>Slang. a period of time in a person’s life characterized by something distinctive and noticeable, such as a particular emotional state, relationship, achievement, or interest: She’s started wearing all black now that she’s in her sad girl era.</li><li>They are definitely in their flop era and could use a complete makeover.</li><li>the period of time to which anything belongs or is to be assigned: She was born in the era of hansoms and gaslight.</li><li>a system of chronologic notation reckoned from a given date: The era of the Romans was based upon the time the city of Rome was founded.</li><li>a point of time from which succeeding years are numbered, as at the beginning of a system of chronology: Caesar died many years before our era.</li><li>a date or an event forming the beginning of any distinctive period: The year 1492 marks an era in world history.</li><li>Geology. a major division of geologic time composed of a number of periods.</li></ul>