epoch Sentence Examples
- The Cenozoic epoch, which began 66 million years ago, is the current epoch of the geologic time scale.
- The Paleozoic epoch lasted from 541 to 252 million years ago and is divided into six periods.
- The Mesozoic epoch, also known as the Age of Dinosaurs, lasted from 252 to 66 million years ago.
- The Precambrian epoch, which lasted from the formation of Earth 4.6 billion years ago to 541 million years ago, is the longest epoch in geologic history.
- The Holocene epoch, which began 11,700 years ago, is the current epoch of the Quaternary period.
- The Pleistocene epoch, which lasted from 2.6 million years ago to 11,700 years ago, is known for its repeated cycles of glaciation and deglaciation.
- The Miocene epoch, which lasted from 23 to 5.3 million years ago, is known for the diversification of mammals and the rise of hominids.
- The Jurassic epoch, which lasted from 201 to 145 million years ago, is known for the dominance of dinosaurs and the emergence of the first birds.
- The Archean epoch, which lasted from 4 billion years ago to 2.5 billion years ago, was characterized by the formation of the Earth's crust and the origin of life.
- The Proterozoic epoch, which lasted from 2.5 billion years ago to 541 million years ago, saw the development of complex life forms, including the first multicellular organisms.
epoch Meaning
epoch (n)
a period marked by distinctive character or reckoned from a fixed point or event
(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
a unit of geological time that is a subdivision of a period and is itself divided into ages
epoch (n.)
A fixed point of time, established in history by the occurrence of some grand or remarkable event; a point of time marked by an event of great subsequent influence; as, the epoch of the creation; the birth of Christ was the epoch which gave rise to the Christian era.
A period of time, longer or shorter, remarkable for events of great subsequent influence; a memorable period; as, the epoch of maritime discovery, or of the Reformation.
A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period.
The date at which a planet or comet has a longitude or position.
An arbitrary fixed date, for which the elements used in computing the place of a planet, or other heavenly body, at any other date, are given; as, the epoch of Mars; lunar elements for the epoch March 1st, 1860.
Synonyms & Antonyms of epoch
FAQs About the word epoch
a period marked by distinctive character or reckoned from a fixed point or event, (astronomy) an arbitrarily fixed date that is the point in time relative to wh
time, day, period, age,era,year,generation, span, space, date
No antonyms found.
The Cenozoic epoch, which began 66 million years ago, is the current epoch of the geologic time scale.
The Paleozoic epoch lasted from 541 to 252 million years ago and is divided into six periods.
The Mesozoic epoch, also known as the Age of Dinosaurs, lasted from 252 to 66 million years ago.
The Precambrian epoch, which lasted from the formation of Earth 4.6 billion years ago to 541 million years ago, is the longest epoch in geologic history.
