| APATOSAURUSES | • apatosauruses n. Plural of apatosaurus. • APATOSAURUS n. a kind of long-necked dinosaur, also APATOSAUR. | 
| ARAEOSYSTYLES | • ARAEOSYSTYLE n. a building or colonnade alternately araeostyle and systyle, also AREOSYSTILE. | 
| ASSEVERATIONS | • asseverations n. Plural of asseveration. • ASSEVERATION n. an earnest affirmation. | 
| BARBAROUSNESS | • barbarousness n. The state or quality of being barbarous. • BARBAROUSNESS n. the state of being barbarous. | 
| BRASSICACEOUS | • brassicaceous adj. Of, pertaining to, or resembling cabbage or other brassicas. • BRASSICACEOUS adj. belonging to the brassica family. | 
| CRASSULACEOUS | • crassulaceous adj. (Botany) Belonging to the family Crassulaceae of succulents, principally herbaceous. • CRASSULACEOUS adj. belonging to the Crassulaceae, a family of succulent plants including the stonecrops and house leeks. | 
| ERGASTOPLASMS | • ergastoplasms n. Plural of ergastoplasm. • ERGASTOPLASM n. ribosome-studded endoplasmic reticulum. | 
| FORESTAYSAILS | • forestaysails n. Plural of forestaysail. • FORESTAYSAIL n. the sail attached to a forestay. | 
| HADROSAURUSES | • HADROSAURUS n. a large dinosaur. | 
| HAZARDOUSNESS | • hazardousness n. The condition of being hazardous. • HAZARDOUS n. dangerous. | 
| HYDROMASSAGES | • hydromassages n. Plural of hydromassage. | 
| OSTEOSARCOMAS | • osteosarcomas n. Plural of osteosarcoma. • OSTEOSARCOMA n. a malignant tumour derived from osteoblasts, composed of bone and sarcoma cells. | 
| PARAPSYCHOSES | • PARAPSYCHOSIS n. an abnormal psychosis. | 
| PARASYMBIOSES | • PARASYMBIOSIS n. the symbiotic relationship that occurs between certain species of fungi and lichens. | 
| PROSAICALNESS | • prosaicalness n. The quality of being prosaic. • PROSAICAL n. relating to prose; dull, banal, also PROSAIC. | 
| PSEUDOSCALARS | • pseudoscalars n. Plural of pseudoscalar. • PSEUDOSCALAR n. a variable quantity that has magnitude but not direction and is an odd function of the coordinates. | 
| RAPACIOUSNESS | • rapaciousness n. The state of being rapacious; extreme gluttony. • RAPACIOUSNESS n. the state of being rapacious. | 
| SARCOPHAGUSES | • sarcophaguses n. Plural of sarcophagus. • sarcophaguses v. Third-person singular simple present indicative form of sarcophagus. • SARCOPHAGUS n. a stone coffin. | 
| STEGOSAURIANS | • stegosaurians n. Plural of stegosaurian. • STEGOSAURIAN n. any quadrupedal herbivorous ornithischian dinosaur of the suborder Stegosauria. |