| ANKYLOSAURS | • ankylosaurs n. Plural of ankylosaur. • ANKYLOSAUR n. a kind of dinosaur with a club tail, also ANKYLOSAURUS. |
| COTYLOSAURS | • cotylosaurs n. Plural of cotylosaur. • COTYLOSAUR n. an extinct primitive reptile with massive body and short legs. |
| CYSTINURIAS | • cystinurias n. Plural of cystinuria. • CYSTINURIA n. a condition in which excessive levels of the amino acid cystine are present in the urine. |
| GLYCOSURIAS | • glycosurias n. Plural of glycosuria. • GLYCOSURIA n. a condition in which glucose is discharged in the urine, also GLUCOSURIA. |
| HYPERACUSES | • HYPERACUSIS n. an abnormally good sense of hearing. |
| HYPERACUSIS | • hyperacusis n. (Medicine) A heightened sensitivity to some sounds, especially extremely loud noises. • HYPERACUSIS n. an abnormally good sense of hearing. |
| LARYNGISMUS | • laryngismus n. (Medicine) A spasmodic state of the glottis, giving rise to contraction or closure of the opening; laryngospasm. • LARYNGISMUS n. spasm of the larynx. |
| PELYCOSAURS | • pelycosaurs n. Plural of pelycosaur. • PELYCOSAUR n. a kind of dinosaur. |
| SUBTREASURY | • subtreasury n. A subordinate treasury, or place of deposit. • SUBTREASURY n. a subordinate treasury. |
| SUPERALLOYS | • superalloys n. Plural of superalloy. • SUPERALLOY n. an alloy that has good stability at 600 degrees to 1000 degrees C. |
| SUPERSAFETY | • supersafety n. The state or condition of being supersafe; exceptional safety. • SUPERSAFETY n. the state of being supersafe. |
| SURVEYANCES | • surveyances n. Plural of surveyance. • SURVEYANCE n. survey; inspection. |
| THYSANURANS | • thysanurans n. Plural of thysanuran. • THYSANURAN n. a member of the bristletails, an order of small wingless insects with abdominal appendages. |
| THYSANUROUS | • thysanurous adj. (Zoology) Of or pertaining to the Thysanura (now Zygentoma), an order of insects with three long caudal filaments. • THYSANUROUS adj. relating to a thysanuran, a bristletail. |
| UNNECESSARY | • unnecessary adj. Not needed or necessary. • unnecessary adj. Done in addition to requirements; unrequired. • UNNECESSARY adj. not necessary. |