We found one dictionary that defines the word extinction of the dinosaurs:

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1. Extinction of the dinosaurs: Wikipedia, the Free Encyclopedia

▸ Words similar to extinction of the dinosaurs ▸ Usage examples for extinction of the dinosaurs ▸ Idioms related to extinction of the dinosaurs ▸ Wikipedia articles (New!) ▸ Words that often appear near extinction of the dinosaurs ▸ Rhymes of extinction of the dinosaurs ▸ Invented words related to extinction of the dinosaurs