pi

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π

1. The 16th letter of the Greek alphabet, pi.
2. Symbol for the ratio of the circumference of a circle to its diameter, approximately 3.14159; symbol for osmotic pressure (Π).

Pi

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

PI

Abbreviation for Periodontal Index.

Pi

Abbreviation for inorganic phosphate.

pI

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

pi (π, Π),

(),
1. The 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 3.14159).
4. Symbol for pros.

PI

Abbreviation for:
package insert
pain intensity
pancreatic insufficiency
parallel imports  
pars intermedia
paternity index
Pearl Index
performance indicator, see there  
perfusion imaging
peripheral iridectomy
phosphatidyl inositol
physically impaired
physiologic index
pituitary
plaque inhibition
poison ivy
post-implantation
post-infection
post-injection
post-inoculation
post-irradiation
post-ischaemic
present illness
primary infection
principal investigator  
product information
prognostic index
proliferation index
protease inhibitor
pulmonary index
pulmonary infarction
pulmonary insufficiency
pulse inversion

π

Greek, lower case, pi.

Π

Abbreviation for osmotic pressure;
pi.

Pi

Abbreviation for inorganic orthophosphate.

PI

Abbreviation for Periodontal Index.

pI

Abbreviation for isoelectric point.

pi

(π, Π) ()
1. The 16th letter of the Greek alphabet (π, Π).
2. Osmotic pressure (Π).
3. mathematics Symbol for the product of a series (Π).
4. Symbol for the ratio of the circumference of a circle to its diameter (approximately 3.14159265) (π).

Π

Abbreviation for osmotic pressure.

PI

Abbreviation for Periodontal Index.

pI

Abbreviation for isoelectric point.

pi

, π ()
1. The 16th letter of the Greek alphabet.
2. (Π). Symbol for osmotic pressure; in mathematics, symbol for the product of a series.
References in periodicals archive ?
5325-00- (Ref) -.005 -.005 -.005 -.005 (-1) 960-2410 .015-.052 .150 .056 .055 .100 (-2) 074-3301 .052-.085 .175 .090 .055 .100 (-3) 926-1394 .085-.128 .220 .131 .055 .100 (-4) 923-9512 .128-.192 .325 .195 .070 .160 (-5) 783-4754 .192-.255 .385 .260 .070 .170 (-6) 783-4753 .255-.318 .445 .320 .075 .180 (-7) 238-6037 .318-.380 .515 .390 .075 .180 (-8) 946-4275 .380-.510 .640 .515 .075 .180 Structural Length Hole Dia of Grommet (In) (In) 1.000 3.141 1.125 3.534 1.250 3.927 1.375 4.319 1.500 4.712 1.625 5.105 1.750 5.497 1.875 5.890 2.000 6.283
(Y) [A.sup.t] [A.sup.t] Quente Media 2.879 -0,0156 Desvio Padrao 4.572 0,076 Frio Media 3.141 0,037 Desvio Padrao 4.167 0,110 Regressao Quente 0,4767 -0,041 (0,47) (-1,70)** M/Bt 1.443 0,0063 (3,30)* (0,70) EBITDA/[A.sub.(t-1)] 0,042 -0,0014 (0,50) (-1,24) Ln(Receit[a.sub.(t-1)]) -0,0727 0,0016 (-0,89) (-0,71) AP/A[A.sub.(t-1)] 3.847 0,0640 (2,02)* (1,83)** D/[A.sub.(t-1)] -20.352 -0,1364 (-0,98) (-2,36)* [R.sup.2] 0,4539 0,2021 N 90 90 Estatistica-t entre parentesis.
En el primer nivel los rendimientos de maiz fueron de 3.909,7 kg/ha; en el segundo, de 3.141,8 kg/ha, y en el tercero de 1.561 kg/ha.
La extension municipal es de 3.141 [km.sup.2] conformada por 27 corregimientos.
Mean Rating of the Four Skills in the Six Volumes of Textbooks Skills / Volumes Listening Reading Speaking Writing 1 3.286 2.966 2.974 2.436 2 3.150 2.979 2.979 2.359 3 3.141 3.043 2.735 2.842 4 3.218 3.004 2.714 2.526 5 2.783 3.004 2.787 2.371 6 2.465 2.995 2.530 2.242 Table 3.
[PI] is the conventional constant (3.141) and the condition shows the size of external debt and the extent of devaluation, relative to the standard deviation ([sigma]) of shocks to the composite fundamental.
Table 5: Two-sample t-test for Jensen Alphas of Bank and Non-bank Funds [alpha] = 0.05 1999:Q2-2002:Q1 Bank Non-bank Mean Jensen alpha -0.015 2.035 Variance 4.775 3.141 Observations 7 9 Hypothesised mean difference 0 Df 11 t statistic -2.019 P(T [less than or equal 0.034 to] t) one-tail t critical one-tail 1.796 P(T [less than or equal 0.068 to] t) two-tail t critical two-tail 2.201 2003:Q1-2004:Q3 Bank Non-bank Mean Jensen alpha 0.878 1.111 Variance 2.891 1.444 Observations 5 7 Hypothesised mean difference 0 Df 7 t statistic -0.263 P(T [less than or equal 0.400 to] t) one-tail t critical one-tail 1.895 P(T [less than or equal 0.800 to] t) two-tail t critical two-tail 2.365 Source: Developed from Mercer (1999-2002) and S&P (2003-2004) data.
Emotional Rural (n = Urban (n = responses of 40) 88) pregnant women X SD X SD t p Uncertainty Score 79.73 11.48 69.17 15.06 3.939 <0.001 Depression Score 20.85 6.29 17.61 4.71 3.651 <0.001 Anxiety Score 21.25 6.30 17.61 4.70 3.141 <0.001
That's about 3.141. Later mathematicians have computed what we now call [pi](pi) to greater and greater accuracy--but how many digits are "enough"?