cretaceous
adjective/krɪˈteɪʃəs/
Frequency rank: #10,364 most common English word
Meaning
Of, relating to, or denoting the geological period from about 145 to 66 million years ago, or resembling chalk.
Example sentence
The museum displayed fossils from cretaceous rock layers that date back over sixty million years.
Synonyms & related words
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