Dinosaur names (or, more specifically, their scientific names) are derived from Latin root words and can mean any number of things:
This method of naming is actually derived from the scientific classification of animals living today. In most zoos, the markers near an animal's exhibit includes the animal's Popular name followed by its latin name. (For example: African Lion-Panthera leo) In the case of the dinosaurs, they were only discovered after this system came into use, meaning that common names haven't necessarily become as common as their scientific names, so the latter became more popular.
It depends which types of names you mean, dinosaur means terrible lizard whereas most of their names come from other languages and describe their charicteristics and personalities
Sinornithosurus was one of them.
dinosaurs
The paleontologists who found them named them.
carnivores
Carnivores
plant eaters
Some bipdeal dinosaurs from the Cretaceous with names beginning in "A" include: Achillobator Austroraptor Adasaurus Atrociraptor
Yolko, Shelly, and Eggwardo
Two of the earliest dinosaurs to be named were the Iguanodon (a plant-eater) and Megalosaur (a meat-eater).
herboviores
dinosaurs and many more