Dinosaur Definition
dīnə-sôr
dinosaurs
noun
Any of various extinct, mostly land-dwelling, four-limbed saurischian or ornithischian reptiles of the Mesozoic Era, including some c. 30 m (98.4 ft) long: the flesh-eaters usually walked on their hind limbs, the plant-eaters on all fours.
Webster's New World
Any large, extinct reptile of the Paleozoic or Mesozoic eras.
Webster's New World
A relic of the past.
American Heritage
Someone or something thought of as being old-fashioned, outmoded, resistant to change, etc.
Webster's New World
One that is hopelessly outmoded or unwieldy.
American Heritage
Other Word Forms of Dinosaur
Noun
Singular:
dinosaurPlural:
dinosaursOrigin of Dinosaur
New Latin Dīnosauria group name from Dīnosaurus former genus name Greek deinos monstrous Greek sauros lizard
From American Heritage Dictionary of the English Language, 5th Edition
From Ancient Greek δεινός (deinos, “terrible, awesome, mighty, fearfully great”) + σαῦρος (sauros, “lizard, reptile”).
From Wiktionary
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