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Ju·ras·sic
 Jurassic
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- pronunciation:
- j
rae
sihk
- parts of speech:
- adjective, noun
| part of speech: |
adjective |
| definition: |
of, relating to, or designating the geological period between the Triassic and Cretaceous of the Mesozoic Era, from approximately 180 million to 135 million years ago, when primitive birds appeared and conifers were prominent.
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| part of speech: |
noun |
| definition: |
the Jurassic Period, or the rock formations that date from that time.
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