n. pl. p's or
P's also
ps or
Ps 1. The 16th letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter p.
3. The 16th in a series.
4. Something shaped like the letter P.
5. P A hypothesized textual source of certain portions of the Pentateuch that have a formulaic style, contain genealogical lists and descriptions of rituals, and use the name "Elohim" to refer to God.