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Pi

From Biology-Online Dictionary | Biology-Online Dictionary
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pi

1. 16th letter of the greek alphabet.

2. (Π). Symbol for osmotic pressure; in mathematics, symbol for the product of a series.

3. (π). Symbol for the ratio of the circumference of a circle to its diameter (approximately 3.14159265).

4. Symbol for inorganic orthophosphate (should not be used when covalently linked to another moiety).

5. The pH value for the isoelectric point of a given substance.

6. (Science: abbreviation) periodontal Index.