In scientific usage, any of the animals belonging to the clade Dinosauria, especially those that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct.

(rare) Dinosaurian.

plural of dinosaur

(slang, humorous, automotive) Any liquid (gasoline, diesel, mineral oil etc.) derived from fossil fuels (mainly petroleum), commonly used in vehicles as fuel or lubricant.

ornithomimosaur

Anastatica, a plant native to deserts of North Africa. / Pallenis hierochuntica, a sunflower native to the Mediterranean. / Selaginella lepidophylla, a plant native to North America.

A person who searches for dinosaur fossils

(slang, humorous) An automobile that operates on fossil fuels, as opposed to an electric car.

plural of dinosaur plant

plural of dinosaur hunter