- plural of dinosaur.
dinosaurs
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Some dinosaurs were very large and had small brains — factors that may in part have led to their extinction. The term is often used to refer to something or someone that is antiquated and unable to adapt to change: “The old cavalry generals couldn't adjust to the use of tanks — they became dinosaurs.”
Some scientists believe that modern birds are the descendants of dinosaurs.
Commonly known dinosaurs include Tyrannosaurus rex, Brontosaurus, Stegosaurus, and Triceratops.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The youth-led protests earlier in the day took place in a mostly peaceful and festive atmosphere, with some dressed in outfits ranging from dinosaurs to Batman as the demonstrations coincided with Halloween.
From Barron's ● Oct. 31, 2026
The researchers also used climate simulations to investigate the decades and centuries immediately following the Chicxulub asteroid impact, which triggered the extinction of most dinosaurs.
From Science Daily ● Oct. 30, 2026
"I'm always happy to see a gannet. They are big and so powerful. They're like dinosaurs."
From BBC ● Oct. 27, 2026
Their paper ended decades of debate over whether the dinosaurs were distinct from one another.
From BBC ● Oct. 27, 2026
He wrote that he’d go back to see the dinosaurs, which was probably the biggest lie he’d ever told in his life.
From "Far from the Tree" by Robin Benway
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.