| COPATRON | • copatron n. A joint patron; a patron of the same person or organisation. • co-patron n. Alternative form of copatron. • COPATRON n. a fellow patron. |
| HORNPOUT | • hornpout n. Synonym of horned pout. • HORNPOUT n. a kind of catfish. |
| INOTROPE | • inotrope n. (Medicine) Any inotropic drug. • INOTROPE n. a drug for controlling the force of muscular contractions. |
| MOONPORT | • moonport n. A spaceport located on a moon. • Moonport n. (Rare) A spaceport designed to send spacecraft to the Moon. • MOONPORT n. a facility for launching spacecraft to the moon. |
| OPTRONIC | • optronic adj. Optoelectronic. • OPTRONIC adj. pertaining to the science concerned with electronics and light. |
| PATROONS | • patroons n. Plural of patroon. • PATROON n. (Dutch) a landowner granted manorial rights under old Dutch law. |
| PENTROOF | • pentroof n. Alternative form of pent roof. • pent␣roof n. A sloping roof with a singular surface. • pent␣roof n. A short roof appended to the side of a building, particularly a barn. |
| PINKROOT | • pinkroot n. A perennial North American herb (Spigelia marilandica), sometimes cultivated for its showy red blossoms. • pinkroot n. An annual South American and West Indian plant (Spigelia anthelmia). • pinkroot n. The root of Spigelia marilandica or Spigelia anthelmia, used as a powerful vermifuge. |
| PLIOTRON | • pliotron n. A hard vacuum triode. • PLIOTRON n. a type of vacuum tube. |
| POLTROON | • poltroon n. An ignoble or total coward; a dastard; a mean-spirited wretch. • poltroon adj. Cowardly. • POLTROON n. a despicable coward, also POULTROONE. |
| PORTIONS | • portions n. Plural of portion. • PORTION v. to divide into shares for distribution. |
| PORTOLAN | • portolan n. (Historical, nautical) A chart of European navigable waters based on descriptions of coasts. • PORTOLAN n. (Italian) in the Middle Ages, a navigation manual, also PORTOLANO, PORTULAN. |
| POSITRON | • positron n. (Physics) The antimatter equivalent of an electron, having the same mass but a positive charge. • POSITRON n. an electron but with a positive charge, also POSITON. |
| PRONATOR | • pronator n. (Anatomy) Any muscle that produces pronation. • PRONATOR n. a forearm or forelimb muscle. |
| PRONOTAL | • pronotal adj. Of or pertaining to the pronotum. • PRONOTAL adj. pertaining to the pronotum. |
| PRONOTUM | • pronotum n. The dorsal plate of the prothorax in insects. • PRONOTUM n. a hard outer plate of an insect. |
| PROTONIC | • protonic adj. Of, pertaining to, or composed of protons. • PROTONIC adj. relating to a proton. |
| SORPTION | • sorption n. (Sciences) Either of the processes of absorption and adsorption; sorbing. • SORPTION n. absorption and/or adsorption. |
| TROOPING | • trooping v. Present participle of troop. • trooping n. The act of marching in a troop. • TROOP v. to move in a crowd. |
| TROPONIN | • troponin n. (Biochemistry, medicine) A complex of three regulatory proteins that is integral to muscle contraction… • TROPONIN n. a protein of muscle. |