| DISPROVER | • disprover n. One who, or that which, disproves. • DISPROVER n. one who disproves. |
| DISRUPTOR | • disruptor n. Alternative spelling of disrupter. • DISRUPTOR n. one who disrupts, also DISRUPTER. |
| PERIDROME | • peridrome n. The space between the columns and the wall of the cella in an Ancient Greek or Roman temple. • PERIDROME n. a gallery or balcony that ran round all four sides of a classical building. |
| PORRIDGES | • porridges n. Plural of porridge. • PORRIDGE n. a soft meal of oatmeal, also PARRIDGE, PARRITCH. |
| PORTIERED | • PORTIERED adj. having a portiere. |
| POSTRIDER | • postrider n. One who rides over a postroad to carry the mails. • post␣rider n. Alternative form of postrider. • POSTRIDER n. one who rides over a post road to carry the mails. |
| POWDERIER | • POWDERY adj. like powder. |
| PREDICTOR | • predictor n. Something that anticipates, predicts, or foretells. • predictor n. A predictor variable. • PREDICTOR n. one who predicts, also PREDICTER. |
| PREORDAIN | • preordain v. (Transitive) To determine the fate of something in advance. • PREORDAIN v. to ordain in advance. |
| PRIMORDIA | • primordia n. Plural of primordium. • PRIMORDIUM n. (Latin) the first discernible rudiment. |
| PRIMROSED | • primrosed v. Simple past tense and past participle of primrose. • PRIMROSE v. to gather primroses. |
| PRODITORS | • proditors n. Plural of proditor. • PRODITOR n. (Latin) a traitor. |
| PRODITORY | • proditory adj. (Obsolete) Treacherous, traitorous. • PRODITORY adj. treacherous. |
| PRODROMIC | • prodromic adj. Prodromal. • PRODROMIC adj. of or pertaining to prodromes; as, the prodromal stage of a disease, also PRODROMAL. |
| PROPERDIN | • properdin n. (Biochemistry) A protein in human serum that complements part of the immune system. • PROPERDIN n. a natural protein in blood that helps provide immunity to infectious disease. |
| PROVIDERS | • providers n. Plural of provider. • PROVIDER n. one that provides. |
| PROVIDORS | • providors n. Plural of providor. • PROVIDOR n. a purveyor, also PROVEDITOR, PROVEDITORE, PROVEDOR, PROVEDORE, PROVISOR. |
| RAINDROPS | • raindrops n. Plural of raindrop. • RAINDROP n. a drop of rain. |
| ROUNDTRIP | • roundtrip n. Alternative form of round trip. • roundtrip v. (Computing, transitive) To export (A file, data, etc.) and eventually import it again without loss of fidelity. • roundtrip v. (Finance) To engage in the form of barter called a round trip. |