| BAROSAURS | • BAROSAUR n. a large dinosaur. |
| HADROSAUR | • hadrosaur n. (Paleontology) Any ornithopod dinosaur of the family Hadrosauridae. • HADROSAUR n. a bird-hipped dinosaur of the Cretaceous. |
| PETROSALS | • petrosals n. Plural of petrosal. • PETROSAL n. the stony part of the temporal bone around the inner ear. |
| PONDEROSA | • ponderosa n. A very large species of pine tree native to western North America, Pinus ponderosa. • ponderosa n. A social, lime or get together where planning or issues are discussed. • Ponderosa prop.n. A census-designated place in Tulare County, California, United States. |
| PROSAICAL | • prosaical adj. Alternative form of prosaic. • PROSAICAL adj. relating to prose; dull, banal, also PROSAIC. |
| PROSAISMS | • prosaisms n. Plural of prosaism. • PROSAISM n. a prosaic style. |
| PROSAISTS | • prosaists n. Plural of prosaist. • PROSAIST n. a writer of prose, also PROSER. |
| PROSATEUR | • prosateur n. A writer of French prose. • PROSATEUR n. (French) one who writes prose for a living. |
| PTEROSAUR | • pterosaur n. Any of several flying reptiles, of the extinct order Pterosauria, including the pterodactyls. • PTEROSAUR n. a pterodactyl, also PTEROSAURIAN. |
| ROSACEOUS | • rosaceous adj. (Botany) Of or pertaining to a rose, or a member of the Rosaceae family of plants. • rosaceous adj. Resembling or characteristic of rosacea; rosy; reddish. • ROSACEOUS adj. of or pertaining to the Rosaceae or rose family. |
| ROSANILIN | • ROSANILIN n. a reddish-brown derivative of anilin used as a dye. |
| ROSARIANS | • rosarians n. Plural of rosarian. • ROSARIAN n. a cultivator of roses. |
| ROSARIUMS | • rosariums n. Plural of rosarium. • ROSARIUM n. (Latin) a rose garden. |
| SCLEROSAL | • sclerosal adj. Exhibiting or relating to sclerosis. • SCLEROSAL adj. affected with sclerosis, induration. |