noun di·no·saur \ˈdī-nə-ˌsr\

: 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: someone or something that is no longer useful or current : an obsolete or out-of-date person or thing

Full Definition of DINOSAUR

:  any of a group (Dinosauria) of extinct often very large chiefly terrestrial carnivorous or herbivorous reptiles of the Mesozoic era
:  any of various large extinct reptiles (as ichthyosaurs) other than the true dinosaurs
:  one that is impractically large, out-of-date, or obsolete
di·no·sau·ri·an \ˌdī-nə-ˈsr-ē-ən\ adjective
di·no·sau·ric \-ˈsr-ik\ adjective

Examples of DINOSAUR

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

Origin of DINOSAUR

New Latin Dinosaurus, genus name, from Greek deinos terrifying + sauros lizard — more at dire
First Known Use: 1841
DINOSAURIAN Defined for Kids


noun di·no·saur \ˈdī-nə-ˌsr\

Definition of DINOSAUR for Kids

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


Next Word in the Dictionary: DinosauriaPrevious Word in the Dictionary: DinornithidaeAll Words Near: dinosaur
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