dinosaur
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source: By Benjoneswhite - Own work, CC BY-SA 4.0
noun
1. a fossil reptile of the Mesozoic era, often reaching an enormous size.
恐竜
The dinosaurs are placed, according to their hip structure, in two distantly related orders (see ornithischian and saurischian). Some of them may have been warm-blooded, and their closest living relatives are the birds. Dinosaurs were all extinct by the end of the Cretaceous period (65 million years ago), a popular theory being that the extinctions were the result of the impact of a large meteorite.
2. a person or thing that is outdated or has become obsolete because of failure to adapt to changing circumstances.
｟くだけて｠ (大きくて)役に立たない時代遅れの物［人］, 無用の長物
DERIVATIVES
dinosaurian |ˌdīnəˈsôrēən| adjective & noun
ORIGIN
mid 19th century: from modern Latin dinosaurus, from Greek deinos ‘terrible’ + sauros ‘lizard’.