Also found in: Thesaurus, Medical, Financial, Encyclopedia.


a. Any of various extinct terrestrial reptiles of the orders Saurischia and Ornithischia that existed during the Mesozoic Era, including both carnivores and herbivores and often reaching a gigantic size.
b. Any of various other large extinct reptiles, such as an ichthyosaur.
2. A relic of the past: "living dinosaurs of the world of vegetation" (John Olmsted).
3. One that is hopelessly outmoded or unwieldy: "The old, big-city teaching hospital is a dinosaur" (Peggy Breault).

[New Latin Dīnosauria, group name, from Dīnosaurus, former genus name : Greek deinos, monstrous + Greek sauros, lizard.]

di′no·saur′i·an (-sôr′ē-ən) n. & adj.
di′no·sau′ric (-sôr′ĭk) adj.


(Palaeontology) of, like, or relating to dinosaurs
References in periodicals archive ?
The Addis Ababa II Agreement seems to have come back minus the past glory of the dinosauric SPLM.
Almost as behind the times as thoroughly modern Carol's dinosauric campaign to stop developers gentrifying Walford.
Yes, there are thousands of us dinosauric shooters still clinging to our sixguns and leverguns, but the semi-automatic is definitely king today.