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/ˌpækɪˌsɛfələˈsɔːɹəs/ · noun
Any of a group of herbivorous dinosaurs, of the genus Pachycephalosaurus from the late Cretaceous period..
Use pachycephalosaurus when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pachycephalosaurus means Any of a group of herbivorous dinosaurs, of the genus Pachycephalosaurus from the late Cretaceous period..
Common synonyms include pachycephalosaur.
The opposite depends on the specific sense.
Use pachycephalosaurus where its definition matches the intended context.
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