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A large pachycephalosaurian dinosaur of the genus Pachycephalosaurus, having a thick domed skull with bony knobs and a long tail. Also called pachycephalosaur.

[New Latin Pachycephalosaurus, genus name : Greek pakhus, thick + Greek kephalē, head; see ghebh-el- in Indo-European roots + Greek sauros, lizard.]


A medium-sized, plant-eating dinosaur of the late Cretaceous Period having a domed skull up to 10 inches (25.4 centimeters) thick.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pachycephalosaurus - bipedal herbivore having 10 inches of bone atop its headpachycephalosaurus - bipedal herbivore having 10 inches of bone atop its head; largest boneheaded dinosaur ever found
bone-headed dinosaur - bipedal herbivorous dinosaurs with bony crowns
References in periodicals archive ?
Explorers are tasked with finding a T Rex and velociraptor, and types less known such as pachycephalosaurus and ankylosaurus.
Then it's time to watch part of an autopsy on a female Pachycephalosaurus and to watch a Triceratops hatching.
There are plenty of others, too, from Triceratops to Pachycephalosaurus via Euoplocephalus and Carnotaurus.
a) The following models lease (in addition to the imposition of subrogation): ornithosuchus (1pc), Plateosaurus (1), Plateosaurus excavation area (1), Apatosaurus rearing (1), europasaurus (1) europasaurus of age (1) , Stegosaurus (1), Diplodocus (1), Diplodocus younger (2), Ceratosaurus (1) Pterodactylus airport (1), Allosaurus younger (1), Deinonychus (2), Iguanodon younger resistant ( 1) Iguanodon younger horizontal (1), Iguanodon nest is small with (1), Triceratops (1), T-Rex (1), Pachycephalosaurus (2), Triceratops baby lying (3) Photo Head ( 1) Troodon (3), Stegosaurus baby (1) Velociraptor (1);
The list of dinosaurs in the movie include Ankylosaurus, Apatosaurus, Baryonyx, Dimorphodon, Edmontosaurus, Gallimimus, Metriacanthosaurus, Microceratus, Mosasaurus, Pachycephalosaurus, Parasaurolophus, Pteranodon, Stegosaurus, Suchomimus, Triceratops and Tyrannosaurus Rex.
One area features three robotic dinosaurs, a Pachycephalosaurus, Tyrannosaurus rex, and Triceratops.
This book would appeal to youngsters interested in dinosaurs, but the complicated names of the different species might be a little off-putting, for example Pachycephalosaurus, and perhaps the addition of a phonetic version would make them easier to read for both children and adults.
The investigations reveal that "larger domed pachycephalosaurs such as Pachycephalosaurus may have been head-butting like Dall sheep or head-shoving like bison, while smaller, high-domed taxa such as Stegoceras may have been flank-butting like mountain goats," Peterson said.
I would like to have a pet Pachycephalosaurus in the backyard," says Bryan.