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apatosaurus excelsus is a noun meaning "huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic". It carries one recorded sense.
huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
Definitions, synonyms and semantic relations for apatosaurus excelsus come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.