Definition that contains psia
- triceratops huge ceratopsian dinosaur having three horns and the neck heavily armored with a very solid frill
- frill (paleontology) a bony plate that curves upward behind the skull of many ceratopsian dinosaurs
- dyspeptic suffering from dyspepsia
- styracosaur an unusual ceratopsian dinosaur having many large spikes around the edge of its bony frill and a long nose horn; late Cretaceous
- pre-eclampsia abnormal state of pregnancy characterized by hypertension and fluid retention and albuminuria; can lead to eclampsia if untreated
- marginocephalia includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
- styracosaurus an unusual ceratopsian dinosaur having many large spikes around the edge of its bony frill and a long nose horn; late Cretaceous
- marginocephalian includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
- suborder marginocephalia includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
- ceratopsidae American ceratopsian dinosaurs