| EPIRRHEMATIC | • EPIRRHEMATIC adj. of or like an epirrhema, in Greek comedy, the address of the coryphaeus to the audience after the parabasis. | 
| IMPERATORIAL | • imperatorial adj. Commanding; authoritative. • imperatorial adj. Relating to the title or office of imperator. • IMPERATORIAL adj. like an imperator. | 
| IMPROPRIATED | • impropriated v. Simple past tense and past participle of impropriate. • IMPROPRIATE v. to transfer ecclesiastical revenue to a layman. | 
| IMPROPRIATES | • impropriates v. Third-person singular simple present indicative form of impropriate. • IMPROPRIATE v. to transfer ecclesiastical revenue to a layman. | 
| MADREPORITIC | • madreporitic adj. Relating to or composed of madreporite. • MADREPORITIC adj. of or like madreporite, in echinoderms, a perforated plate serving as opening to the stone canal. | 
| MICROPARTIES | • microparties n. Plural of microparty. • MICROPARTY n. a small political party, especially one focussing on a single issue. | 
| PERICARDIUMS | • pericardiums n. Plural of pericardium. • PERICARDIUM n. a membranous sac containing the heart. | 
| PERICRANIUMS | • pericraniums n. Plural of pericranium. • PERICRANIUM n. a membrane covering the skull. | 
| PERIMETRICAL | • perimetrical adj. Of, relating to or having a perimeter. • PERIMETRICAL adj. relating to a perimeter, also PERIMETRAL, PERIMETRIC. | 
| PICROCARMINE | • picrocarmine n. A stain made from picric acid and indigo carmine. • PICROCARMINE n. a stain for microscope work made from carmine, ammonia, water and picric acid. | 
| PILGRIMAGERS | • pilgrimagers n. Plural of pilgrimager. • PILGRIMAGER n. one who goes on a pilgrimage, also PILGRIM, PILGRIMER. | 
| POLARIMETRIC | • polarimetric adj. (Physics) Of or pertaining to polarimetry, or measured using a polarimeter. • POLARIMETRIC adj. relating to measurement by polarimeter, an instrument for measuring polarised light. | 
| PREAMPLIFIER | • preamplifier n. A voltage amplifier for amplifying a low-level input signal; its output is the input to a higher-level amplifier. • PREAMPLIFIER n. an amplifier designed to amplify extremely weak electrical signals before they are fed to additional amplifier circuits. | 
| PREMIGRATION | • premigration adj. Before migration. • PREMIGRATION adj. preceding migration. | 
| PREPRIMARIES | • preprimaries n. Plural of preprimary. • PREPRIMARY n. an election occurring before the primary elections. | 
| REPRIMANDING | • reprimanding v. Present participle of reprimand. • REPRIMAND v. to scold, censure. |