The longest division of geologic time, containing two or more eras.
Answer:
Although usually taken to mean just a very long time, astronomy and geology use eon to mean a billion years.
The Phanerozoic Eon was the longest.
Precambrian
In geology, an eon is an abritrary length of time having no specific length of age. An eon is the the category encompassing the largest periods of time in geologic history.an eon is an exact period of time . It is the time of a Great Year! That being the time it takes our known solar system to go around the somewhat unknow dark star or brown dwarf that is actually the center star of our solar system 65 billion miles from the center of our bright star the sun. that time is 25,687 years to go around! The answer is 25 687 years equals an eon. Now proceed to wake yourselves up some more and study Switzerland's King
an era uhm NO ^ an eon . (apex)
Phanerozoic is the eon which geologic time scale means visable life.
Eon.
The smallest unit of geologic time is an age, followed by epoch, period, era, eon, and super eon.
An eon.
A long period of time is commonly referred to as an era or epoch.
An Eon.
eon
eon
No unless you use an a.r code. The eon ticket was in an event a long time ago.
The opposite meaning for eon is a short period of time which can be calculated or measured.Note: The answer is based on the assumption that the questioner asked the antonym for the word eon meaning immeasurably long period of time.
A long time is considered an eon or millions of years. It is a long period of time that is considered long. This "long time" is truly a long time.
An eon is an indefinitely long period of time, in which there exist noteworthy periods known as eras.
An 'eon' or an 'era' .
age, era, eon
An example of eon in a sentence is ' Dinosaurs existed many eons ago on planet Earth.' The meaning of the word 'eon' is a long time ago.