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ply2 a layer, as of wood products. [2 definitions]
Plymouth a U.S. town in southeastern Massachusetts. In 1620, English colonists known as the Pilgrims established a settlement called Plymouth Colony in this location, which later became the town of Plymouth.
plywood a sturdy board made from thin layers of wood tightly compressed and glued together, usu. with the grains at right angles.
Pm symbol of the chemical element promethium.
p.m. abbreviation of "post meridiem" (Latin); after noon, or the period of time from noon until midnight.
P.M. abbreviation of "Prime Minister," the chief minister and head of the cabinet in parliamentary governments.
pneumatic of, using, or concerning air or other gases. [5 definitions]
pneumatics (used with a sing. verb) the scientific study of the mechanical properties of gases.
pneumococcus a bacterium that can cause pneumonia.
pneumoencephalogram an x-ray of the spaces in the brain that contain fluid, after the replacement of the cerebrospinal fluid by air or gas.
pneumonia a serious disease caused by viruses, bacteria, or fluid in the lungs, and characterized by inflammation of one or both lungs.
pneumonic of or relating to the lungs. [2 definitions]
pneumothorax an abnormal accumulation of air in the pleural cavity, which can cause the lung to collapse.
pniese in Wampanoag language and culture, an elite warrior counselor.
Pnom-Penh variant of Phnom Penh.
Po symbol of the chemical element polonium.
P.O.1 abbreviation of "post office," a department or branch of a government responsible for the circulation of mail, esp. an office or division of this department at which mail is received and sorted, from which it is delivered, and at which stamps, money orders, and the like can be purchased.
P.O.2 abbreviation of "parole officer," a court-appointed official who supervises persons, including convicts, who are on probation.
poach1 to hunt, fish, or trap illegally or on another's land. [3 definitions]
poach2 to cook by boiling or simmering in water or other liquid.
poacher1 one who illegally hunts on another's property.