| prickle cell |
a cell in the germinal layer of the skin (the prickle-cell layer); has many spines and radiating processes
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| prickly heat |
obstruction of the sweat ducts during high heat and humidity
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| prickly pear cactus |
prickly pear: cacti having spiny flat joints and oval fruit that is edible in some species; often used as food for stock
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| primary |
of first rank or importance or value; direct and immediate rather than secondhand; "primary goals"; "a primary effect"; "primary sources"; "a primary interest" not derived from or reducible to something else; basic; "a primary instinct" chief(a): most important element; "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets" a preliminary election where delegates or nominees are chosen one of the main flight feathers projecting along the outer edge of a bird's wing elementary: of or being the essential or basic part; "an elementary need for love and nurturing" primary coil: coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary coil" basal: of primary importance
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| principal axis |
a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
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