| COUNTERSHADINGS | • countershadings n. Plural of countershading. • COUNTERSHADING n. cryptic coloration of an animal with parts normally in shadow being light and parts normally illuminated being dark thereby reducing shadows and contours. |
| DESULPHURATIONS | • desulphurations n. Plural of desulphuration. • DESULPHURATION n. the act of desulphuring. |
| DOLICHOSAURUSES | • DOLICHOSAURUS n. any member of the Dolichosauria, a group of Cretaceous fossil reptiles. |
| DRAUGHTSPERSONS | • draughtspersons n. Plural of draughtsperson. • DRAUGHTSPERSON n. a gender-neutral term for draughtsman or draughtswoman. |
| ECHINODERMATOUS | • echinodermatous adj. (Zoology) Relating to Echinodermata; echinodermal. • ECHINODERMATOUS adj. of or like an echinoderm. |
| EDRIOPHTHALMOUS | • edriophthalmous adj. (Zoology) Pertaining to the Edriophthalma, a former classification of peracarids. • EDRIOPHTHALMOUS adj. of crustaceans, with stalkless eyes, also EDRIOPHTHALMIAN, EDRIOPHTHALMIC. |
| ENCHONDROMATOUS | • enchondromatous adj. Relating to enchondroma. • ENCHONDROMATOUS adj. of or like an enchondroma, an abnormal cartilaginous growth. |
| HAZARDOUSNESSES | • HAZARDOUSNESS n. HAZARDOUS, dangerous. |
| HETERODACTYLOUS | • heterodactylous adj. (Zoology) Having the first and second toes turned backward, as in the trogons. • HETERODACTYLOUS adj. having the first and second toes turned backwards, as in trogons, and not the first and fourth as in parrots. |
| HYDROCEPHALUSES | • hydrocephaluses n. Plural of hydrocephalus. • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY. |
| HYPERFASTIDIOUS | • hyperfastidious adj. Extremely fastidious. • HYPERFASTIDIOUS adj. excessively fastidious. |
| PSEUDEPIGRAPHON | • pseudepigraphon n. Singular of pseudepigrapha. • PSEUDEPIGRAPHON n. a book ascribed to Old Testament characters, but not judged genuine by scholars. |
| PSEUDOARTHROSES | • pseudoarthroses n. Plural of pseudoarthrosis. • PSEUDOARTHROSIS n. a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united, also PSEUDARTHROSIS. |
| PSEUDOARTHROSIS | • pseudoarthrosis n. Alternative form of pseudarthrosis. • PSEUDOARTHROSIS n. a joint formed by fibrous tissue bridging the gap between the two fragments of bone of an old fracture that have not united, also PSEUDARTHROSIS. |
| RADICULOPATHIES | • radiculopathies n. Plural of radiculopathy. |
| ROUNDHEADEDNESS | • ROUNDHEADEDNESS n. the state of being roundheaded. |
| SOUTHWESTWARDLY | • southwestwardly adv. Toward the southwest. • SOUTHWESTWARDLY adv. in a southwesterly direction. |