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power politics (used with a sing. or pl. verb) international diplomacy in which one or several participants threaten with, or use, military or economic force.
power structure the system or hierarchy of authority or control in politics, business, society, or the like. [2 definitions]
power switch a device used to open or close an electric connection.
power tool a tool that operates by electric power.
power up to turn on an electrical or electronic device or system, or otherwise connect it to a power source. [2 definitions]
powwow a North American Indian ceremony, usu. with ritual dancing, feasting, and chanting, performed to aid warriors in battle, cure disease, or aid the hunt. [4 definitions]
pox a disease, such as chicken pox, that is characterized by a pustular skin rash. [2 definitions]
pp. abbreviation of "pages," a plural form of "pages."
ppb abbreviation of "parts per billion."
ppm abbreviation of "parts per million."
P.P.S. abbreviation of "post postscriptum" (Latin); a second or additional postscript.
PR1 abbreviation of "Puerto Rico," a West Indies island commonwealth associated with the United States, east of the Dominican Republic.
Pr symbol of the chemical element praseodymium.
PR2 abbreviation of "public relations," the organized efforts of a corporation, organization, institution, or the like to establish a favorable image or favorable relations with the general public. [2 definitions]
pr. abbreviation of "pair" or "pairs."
practicable capable of being done or put into practice.
practical of or relating to practice and experience as opposed to theory or abstraction. [5 definitions]
practical joke a playful or mischievous trick played on someone, often causing embarrassment or discomfort.
practical joker a person who engages in practical jokes.
practically in every essential respect; virtually. [3 definitions]
practical nurse a nurse who has had some training in nursing and is often licensed by a state to provide basic care for patients, usu. under the supervision of a registered nurse.