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 American Museum of Natural History gave fans the chance to rub shoulders with dinosaurs while watching Messi, 39, fail to steer Argentina to its fourth World Cup.
From Barron's ● Jul. 19, 2026
The asteroid strike that created it is widely associated with the extinction event that wiped out all nonavian dinosaurs and many other species.
From Science Daily ● Jul. 18, 2026
The U.S. is the only country where fossils excavated on private land can be sold, prompting a long-running debate about whether dinosaurs should be privately owned.
From The Wall Street Journal ● Jul. 14, 2026
Jeff Goldblum and Martin Ferrero also appeared alongside Neill, Dern and Attenborough - as well as lots of dinosaurs.
From BBC ● Jul. 13, 2026
But then I remember how terrified I was when Ma accidentally took me to the land of dinosaurs.
From "Dragons in a Bag" by Zetta Elliott
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.