1. variable nounP is the sixteenth letter of the English alphabet.
2. p is an abbreviation for pence or , penny.
They cost 5p each.
...plans to increase income tax by 1p.
3. You write p. before a number as an abbreviation for 'page'. The plural form is 'pp.'
See p. 246 for Thom Bean's response.
...see Chapter 4 (pp. 109-13).
4. P or p is used as an abbreviation for words beginning with p, such as 'per' or 'parking'.
5. In a piece of music, p is a written abbreviation for piano and indicates that the piece should be played quietly.