dinosaur

noun di·no·saur \ ˈdī-nə-ˌsȯr \
Updated on: 16 Nov 2017

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3 :one that is impractically large, out-of-date, or obsolete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.

dinosaurian

play \ˌdī-nə-ˈsȯr-ē-ən\ adjective

dinosauric

play \-ˈsȯr-ik\ adjective

Examples of dinosaur in a Sentence

  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.

Recent Examples of dinosaur from the Web

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.

Origin and Etymology of dinosaur

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

dinosaur Synonyms


DINOSAUR Defined for English Language Learners

dinosaur

noun

Definition of dinosaur for English Language Learners

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  • : someone or something that is no longer useful or current : an obsolete or out-of-date person or thing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

dinosaur

noun di·no·saur \ ˈdī-nə-ˌsȯr \

Definition of dinosaur for Students

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


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