Ordovician
adjective
Or·do·vi·cian
ˌȯr-də-ˈvi-shən 
: of, relating to, or being the period between the Cambrian and the Silurian or the corresponding system of rocks see Geologic Time Table
Ordovician
noun
Examples of Ordovician in a Sentence
Recent Examples on the Web
Other notably old objects include: Hundreds of fossils from the Late Ordovician period that are 420 million years old.
—
Erin Couch, The Enquirer, 6 Oct. 2024
Of the over 200 impact craters known, 21 date to the Ordovician—the time period from 485.4 to 443.4 million years ago.
—David Bressan, Forbes, 23 Sep. 2024
The first clue came from a series of 21 craters that formed during a roughly 40-million-year period of intense meteorite impact known as the Ordovician impact spike.
—Margherita Bassi, Smithsonian Magazine, 19 Sep. 2024
Tomkins and his colleagues were intrigued by a window of time in the Ordovician period (~485-443 million years ago) where the rate of impacts seem to be higher on Earth based on the evidence of preserved craters.
—Erik Klemetti, Discover Magazine, 18 Sep. 2024
Around that time, during what’s called the Ordovician period, there seems to have been an increase in impact craters on Earth.
—Michael Irving, New Atlas, 16 Sep. 2024
The first of the Big Five mass extinctions transpired about 445 million years ago, marking the boundary between the Ordovician and Silurian periods back when fish and land plants were still relatively new.
—Riley Black, Smithsonian Magazine, 12 July 2024
Have Chernobyl Mutations Rewired Evolution? Gamma-Ray Events Through the Ages
Around 450 million years ago, during the Ordovician era, a sudden ice age is believed to have wiped out two thirds of animal life.
—Max Bennett, Discover Magazine, 18 Mar. 2024
The Ordovician period came to a chaotic end with a major mass extinction event that rocked Earth, eliminating about 85 percent of all species.
—Jack Knudson, Discover Magazine, 9 Feb. 2024
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Erin Couch, The Enquirer, 6 Oct. 2024
Of the over 200 impact craters known, 21 date to the Ordovician—the time period from 485.4 to 443.4 million years ago.
—David Bressan, Forbes, 23 Sep. 2024
The first clue came from a series of 21 craters that formed during a roughly 40-million-year period of intense meteorite impact known as the Ordovician impact spike.
—Margherita Bassi, Smithsonian Magazine, 19 Sep. 2024
Tomkins and his colleagues were intrigued by a window of time in the Ordovician period (~485-443 million years ago) where the rate of impacts seem to be higher on Earth based on the evidence of preserved craters.
—Erik Klemetti, Discover Magazine, 18 Sep. 2024
Around that time, during what’s called the Ordovician period, there seems to have been an increase in impact craters on Earth.
—Michael Irving, New Atlas, 16 Sep. 2024
The first of the Big Five mass extinctions transpired about 445 million years ago, marking the boundary between the Ordovician and Silurian periods back when fish and land plants were still relatively new.
—Riley Black, Smithsonian Magazine, 12 July 2024
Have Chernobyl Mutations Rewired Evolution? Gamma-Ray Events Through the Ages
Around 450 million years ago, during the Ordovician era, a sudden ice age is believed to have wiped out two thirds of animal life.
—Max Bennett, Discover Magazine, 18 Mar. 2024
The Ordovician period came to a chaotic end with a major mass extinction event that rocked Earth, eliminating about 85 percent of all species.
—Jack Knudson, Discover Magazine, 9 Feb. 2024
Dictionary Entries Near Ordovician
Cite this Entry
“Ordovician.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Ordovician. Accessed 1 Dec. 2024.
Copy CitationKids Definition
Ordovician
adjective
Or·do·vi·cian
ˌȯrd-ə-ˈvish-ən
: of, relating to, or being a period of the Paleozoic era of geological history or the corresponding system of rocks see geologic time
Ordovician
noun
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