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P, 16th letter of the alphabet, representing the voiceless bilabial stop. It corresponds to Greek pi, but in form it looks like Greek rho (see R). For the technical use of P in higher criticism, see Old Testament. In chemistry P is the symbol of the element phosphorus.
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(science and technology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
1. On drawings, abbr. for page.
2. Abbr. for pole.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
pharmacy only: used to label medicines that can be obtained without a prescription, but only at a shop at which there is a pharmacist
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005