| DYSPROSIUMS | • DYSPROSIUM n. a rare-earth metal used in nuclear research. |
| GYPSIFEROUS | • gypsiferous adj. Containing gypsum. • GYPSIFEROUS adj. bearing gypsum. |
| 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. |
| PELYCOSAURS | • pelycosaurs n. Plural of pelycosaur. • PELYCOSAUR n. a kind of dinosaur. |
| POLYESTROUS | • polyestrous adj. (Biology) Having multiple periods of estrus in a year, or during a breeding season. • POLYESTROUS adj. having more than one period of estrus in a year. |
| PRESBYCUSES | • PRESBYCUSIS n. progressive loss of hearing with advancing old age, also PRESBYACOUSIS, PRESBYACUSIS, PRESBYCOUSIS. |
| PRESBYCUSIS | • presbycusis n. (Otolaryngology, pathology) Inability of the ears, due to aging, to perceive and focus on high-pitched sounds. • PRESBYCUSIS n. progressive loss of hearing with advancing old age, also PRESBYACOUSIS, PRESBYACUSIS, PRESBYCOUSIS. |
| PUSSYFOOTER | • pussyfooter n. One who pussyfoots. • PUSSYFOOTER n. one who pussyfoots. |
| PYROLUSITES | • pyrolusites n. Plural of pyrolusite. • PYROLUSITE n. native manganese dioxide, a black or dark-grey tetragonal mineral with a metallic lustre. |
| 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. |
| SUPERSYSTEM | • supersystem n. A system comprising several subsystems. • SUPERSYSTEM n. a system that is made up of systems. |
| SUPERVISORY | • supervisory adj. Of, pertaining to, or in the capacity of a supervisor. • SUPERVISORY adj. relating to or having supervision. |
| SUPPOSITORY | • suppository n. (Medicine) A medicine in the form of a small plug that is inserted into a bodily cavity, especially… • SUPPOSITORY n. a solid but readily meltable cone or cylinder of usually medicated material for insertion into a bodily passage or cavity, as the rectum. |
| SURETYSHIPS | • suretyships n. Plural of suretyship. • SURETYSHIP n. the state of being surety. |
| SURPRISEDLY | • surprisedly adv. In a surprised manner. • SURPRISED adv. SURPRISE, to come upon unexpectedly, also SURPRIZE. |