dinosaur

plural dinosaurs · alternative archaic deinosaur · alternative Dinosaur · alternative dinosaurus

1. usuallyThose animals of the clade Dinosauria that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct.First known use c. 1840

   Despite what some cartoons portray, no humans were around when dinosaurs roamed the Earth.

   Synonyms: non-avian dinosaur

2. less often but also correctlyAny of the animals belonging to the clade Dinosauria, including its sole surviving lineage: Neornithes.

   Many people love their backyard birds, but some of us may not realize that those feathery friends are also literally dinosaurs, in a biologically accurate sense of that word.

3. broadlyinformalproscribedAny extinct reptile, not necessarily belonging to Dinosauria, that existed between about 230 million and 65 million years ago, as well as the stem-mammal Dimetrodon.

   Pterosaurs, plesiosaurs, icthyosaurs — I don't know, they're all dinosaurs to me!

   2 more examples

   "Not a bird, my dear Roxton - not a bird." "A beast?" "No; a reptile - a dinosaur."

   1912, Arthur Conan Doyle, The Lost World […], London; New York, N.Y.: Hodder and Stoughton, →OCLC

   ‘Dinosaur!’ Denham exploded. ‘By the Power! A dinosaur!’

   1932, Delos W. Lovelace, King Kong, published 1965, page 80

4. colloquialfigurativelySomeone or something that is very old or old-fashioned, especially someone who is not willing to change and adapt.

   She may be a tough old bird, but it's a mistake to write her off as a dinosaur; you do so at your own risk.

   2 more examples

   [The OS/360 linkage editor] is the culmination of years of development of static overlay technique. Yet it is also the last and finest of the dinosaurs, for it belongs to a system in which multiprogramming is the normal mode and dynamic core allocation the basic assumption.

   1975, Frederick P. Brooks Jr., The Mythical Man-Month, published 1995

   The sign in the window said for sale or trade on the last remaining dinosaur Detroit made.

   1999, Ron Harbin, Aaron Barker, Anthony L. Smith, “What About Now”, performed by Lonestar

   Synonyms: fossil, old fart, fuddy-duddy

5. colloquialfigurativelyAnything no longer in common use or practice.

   I couldn't believe it when I saw the equipment that they were still using. Those machines were all dinosaurs, but they were busily cranking out production.

comparative more dinosaur · superlative most dinosaur · alternative archaic deinosaur · alternative Dinosaur · alternative dinosaurus

1. derogatoryfigurativelyinformaluncommonVery old or old-fashioned.

   With this outfit, I would head for the Fontainbleau, or any of the other dinosaur hotels of Miami Beach to sip frozen daiquiris.

   1990, Omar Torres, Fallen Angels Sing, page 13

present singular third person dinosaurs · participle present dinosauring · participle past dinosaured · past dinosaured · alternative archaic deinosaur · alternative Dinosaur · alternative dinosaurus

1. informalraretransitiveTo treat something as outdated, obsolete, or no longer worth keeping.