dinosaur

noun
di·​no·​saur | \ ˈdī-nə-ˌsȯr \

Definition of dinosaur

1 : any of a group (Dinosauria) of extinct often very large chiefly terrestrial carnivorous or herbivorous reptiles of the Mesozoic era
2 : any of various large extinct reptiles (such as ichthyosaurs) other than the true dinosaurs
3 : one that is impractically large, out-of-date, or obsolete The factory is now a rusting dinosaur.

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Other Words from dinosaur

dinosaurian \ ˌdī-​nə-​ˈsȯr-​ē-​ən \ adjective
dinosauric \ -​ˈsȯr-​ik \ adjective

Synonyms for dinosaur

Synonyms

has-been, relic

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Examples of dinosaur in a Sentence

The old factory is now a rusting dinosaur. The character she plays is a dinosaur—a former beauty queen who is living in the past.

Recent Examples on the Web

This past September, Prince William revealed that his son has a thing for dinosaurs. Chloe Foussianes, Town & Country, "Prince George Is Learning About Outer Space in School, Kate Middleton Reveals," 15 Jan. 2019 Some people just really love Halloween and are crafty, and creative Pinterest goddesses with mellow, smushy children who don’t mind being nestled into dinosaur or giraffe costumes. Michelle Ruiz, Vogue, "Are You Dressing Your Kids for Halloween—or for Instagram?," 30 Oct. 2018 Each player drafts cards for a dinosaur park, arranges them in a grid (that has one empty space), and turns over a timer. Nate Anderson, Ars Technica, "Eight great board games we played at PAX Unplugged," 8 Dec. 2018 In an additional Instagram post shared before the Just Jared event, Joey was spotted wearing an inflatable dinosaur costume. Lauren Rearick, Teen Vogue, "Joey King Went as Voldemort for Halloween," 29 Oct. 2018 Your Modern Family gives you all the details on how to make this dinosaur costume for your pet. Blake Bakkila, Good Housekeeping, "People Are Making DIY Halloween Costumes Out of Amazon Boxes — and They're Pretty Amazing," 22 Oct. 2018 Many giant dinosaurs walked on four legs but had ancestors that walked on two legs. Chris Ciaccia, Fox News, "Amazing giant dinosaur discovery: New dino species identified," 28 Sep. 2018 The stars held a media day last week to promote the dinosaur sequel on Oahu, less than 200 miles from Hawaii's Big Island where lava flowing from Kilauea has claimed as many as 700 homes, CBS Honolulu affiliate KGMB reported this week. CBS News, ""Jurassic World" cast and crew on "unfortunate" timing of release amid volcanic disasters," 14 June 2018 In a halftime show performance on Saturday (October 13), the Iowa State Cyclones marching band brought a line of dancing dinosaurs onto the football field. Lauren Rearick, Teen Vogue, "Iowa State Marching Band Used Dancing Dinosaurs for a Performance of the "Jurassic Park" Theme Song," 14 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dinosaur.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dinosaur

1841, in the meaning defined at sense 1

History and Etymology for dinosaur

New Latin Dinosaurus, genus name, from Greek deinos terrifying + sauros lizard — more at dire

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Statistics for dinosaur

Last Updated

14 Feb 2019

Look-up Popularity

Time Traveler for dinosaur

The first known use of dinosaur was in 1841

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More Definitions for dinosaur

dinosaur

noun

English Language Learners Definition of dinosaur

: one of many reptiles that lived on Earth millions of years ago
: someone or something that is no longer useful or current : an obsolete or out-of-date person or thing

dinosaur

noun
di·​no·​saur | \ ˈdī-nə-ˌsȯr \

Kids Definition of dinosaur

: any of a group of extinct often very large mostly land-dwelling reptiles that lived millions of years ago

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Comments on dinosaur

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