| GROUNDPROXES | • GROUNDPROX n. an altitude warning system in aircraft. |
| PREMEASURING | • premeasuring v. Present participle of premeasure. • PREMEASURE v. to measure in advance. |
| PRESSURISING | • pressurising v. Present participle of pressurise. • PRESSURISE v. to place under pressure, also PRESSURIZE. |
| PRESSURIZING | • pressurizing v. Present participle of pressurize. • PRESSURIZE v. to place under pressure, also PRESSURISE. |
| PRESURVEYING | • PRESURVEY v. to survey in advance. |
| PROGENITURES | • progenitures n. Plural of progeniture. • PROGENITURE n. an act or instance of begetting. |
| PURGATORIANS | • purgatorians n. Plural of purgatorian. • PURGATORIAN n. a person who believes in Purgatory. |
| REPERCUSSING | • repercussing v. Present participle of repercuss. • REPERCUSS v. to reverberate, have consequences. |
| REPURCHASING | • repurchasing v. Present participle of repurchase. • REPURCHASE v. to buy back or again. |
| RUSTPROOFING | • rustproofing v. Present participle of rustproof. • RUSTPROOFING n. the act of making resistant to rust, such as by applying a coating. |
| SUPEREROGANT | • supererogant adj. Supererogatory. • SUPEREROGANT adj. doing more than is necessary. |
| SUPERORGANIC | • superorganic adj. Above or beyond the organic. • SUPERORGANIC adj. relating to those aspects of a culture that are conceived as being superior to the individual members of the society. |
| SUPERSINGERS | • supersingers n. Plural of supersinger. • SUPERSINGER n. an exceptionally talented singer. |
| SUPERSTRINGS | • superstrings n. Plural of superstring. • SUPERSTRING n. a hypothetical very small one-dimensional particle from which other fundamental particles arise. |
| SUPERSURGEON | • supersurgeon n. An exceptionally talented or successful surgeon. • SUPERSURGEON n. an exceptional surgeon. |
| SURPRISINGLY | • surprisingly adv. In a way that causes surprise because it is unexpected, or unusual. • SURPRISING adv. causing surprise. |
| UNDERPRISING | • UNDERPRISE v. (obsolete) to value too little. |
| UNSURPRISING | • unsurprising adj. Not surprising; expected. • UNSURPRISING adj. not surprising or unexpected. |