Eon goes back to the Greek aiōn, "age." An age is not easy to measure, and neither is an eon. Both are just really long periods of time, but in science an eon is about a billion years.
How do you use eon in a sentence?
Eon in a Sentence ?
- I hadn't seen my sister in an eon and was so excited when she finally came to visit me.
- The husband's complaining wife went on for an eon, leading him to eventually tune her out.
- It seemed like an eon had passed before the lazy mechanic was finished working on my truck.
What are the four eons of time?
For example, the entire age of the earth is divided into four eons: the Hadean Eon, the Archean Eon, the Proterozoic Eon, and the Phanerozoic Eon. These four eons are further subdivided into eras (Table 7.3).
