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polluted made unclean, impure, unhealthy, or corrupt; contaminated.
pollution the act or process, or an instance, of polluting. [3 definitions]
Pollux a yellow star in the constellation Gemini, having a magnitude of 1.1.
Pollyanna in an early twentieth-century novel by Eleanor H. Porter, the heroine and title character, who is always happy and optimistic. [2 definitions]
polo a game played on horseback by two teams of three or four members each who use long-handled mallets to drive a small wooden ball into the opponent's goal.
polonaise a slow, stately dance of Polish origin, consisting mainly of a promenade. [2 definitions]
polonium a chemical element that has eighty-four protons in each nucleus and that occurs naturally in many highly toxic radioactive isotopes. (symbol: Po)
polo shirt a pullover sport shirt of knitted cotton or a cotton blend, usu. having a soft collar and a button placket.
poltergeist a supernatural presence that manifests itself by making noises and causing objects to move.
poltroon a despicable coward.
poly- many; several. [2 definitions]
polyandrous of, characterized by, or practicing polyandry. (Cf. monandrous.) [2 definitions]
polyandry the practice or condition of having more than one husband at a time. (Cf. monandry.) [3 definitions]
polyanthus any of a number of primroses bearing flowers in clusters. [2 definitions]
polycarpic able to produce fruit many times, as perennial plants. [2 definitions]
polycentrism in a communist political system, the existence of separate centers of authority.
polychlorinated biphenyl see PCB.
polychrome having many or varied colors; multicolored. [4 definitions]
polyclinic a clinic or hospital that treats every kind of disease or injury.
polyconic projection a type of map on which the latitudinal lines are represented as the arcs of circles with different centers along the straight central meridian, and the other longitudinal lines are shown as curves.
polydipsia abnormal or excessive thirst.