p — ODE · Shobdo

▸ abbreviation

1 page:

see p 784.

2 [in combination] Chemistry (p-) para-:

p-xylene.

3 British English penny or pence:

a 5p coin.

4 Music piano (softly).

5 [in combination] (in units of measurement) pico- (10−12):

a 220 pf capacitor.

6 Chemistry denoting electrons and orbitals possessing one unit of angular momentum:

p-electrons.

[from principal, originally applied to lines in atomic spectra]

▸ symbol

1 Physics pressure:

pV = nRT.

2 Statistics probability:

this difference was significant (p = 0.0008).