What is the meaning of P?

The sixteenth letter of the basic modern Latin alphabet.

a voiceless bilabial plosive.

[p]-onset (prestopping / preocclusion / preplosion), [p]-release (e.g. ⟨kᵖ⟩ for [k͡p]), [p]-coloring, or a weak, fleeting or epenthetic [p].

pressure

piano (play softly)

power of; the negative logarithm of a concentration, as in pH or pOH

proton

The sixteenth letter of the English alphabet, called pee and written in the Latin script.

Abbreviation of post, meaning after

Abbreviation of per.

Abbreviation of up.

Alternative form of p.; Abbreviation of page (plural pp)

Abbreviation of penny; pence.

proton

Abbreviation of progressive scan.

Methamphetamine

Abbreviation of piss (“urine”).

Abbreviation of purl.

Abbreviation of pretty

Alternative spelling of p.m. (“post meridiem”) or pm

The twenty-third letter of the Azerbaijani alphabet, written in the Latin script.

The seventeenth letter of the Basque alphabet, called pe and written in the Latin script.

Alternative form of p.t (“sky”)

mat

plinth

Pe, a city in Lower Egypt, where the Pharaohs were crowned.

The twenty-eighth letter of the Livonian alphabet, written in the Latin script.

The sixteenth letter of the Norwegian alphabet, written in the Latin script.

The nineteenth letter of the Nupe alphabet, written in the Latin script.

The twenty-sixth letter of the Skolt Sami alphabet, written in the Latin script.

The sixteenth letter of the Dutch alphabet, written in the Latin script.

The twentieth letter of the Esperanto alphabet, called po and written in the Latin script.

The sixteenth letter of the Estonian alphabet, called pee and written in the Latin script.

The nineteenth letter of the Faroese alphabet, written in the Latin script.

The sixteenth letter of the Finnish alphabet, called pee and written in the Latin script.

Abbreviation of penni. (Finnish penny, no longer used)

The fifteenth letter of the French alphabet, written in the Latin script.

A letter of the Fula alphabet, written in the Latin script.

Romanization of 𐍀

The twenty-eighth letter of the Hungarian alphabet, called pé and written in the Latin script.

Abbreviation of perc (“minute[s]”).

The twentieth letter of the Icelandic alphabet, written in the Latin script.

The sixteenth letter of the Ido alphabet, written in the Latin script.

The fourteenth letter of the Italian alphabet, called pi and written in the Latin script.

The twenty-fourth letter of the Kashubian alphabet, written in the Latin script.

The letter of the Latin alphabet, written in the Latin script.

The twenty-fourth letter of the Latvian alphabet, called pē and written in the Latin script.

The sixteenth letter of the Malay alphabet, written in the Latin script.

The twentieth letter of the Maltese alphabet, written in the Latin script.

The twenty-second letter of the Polish alphabet, called pe and written in the Latin script.

The sixteenth letter of the Portuguese alphabet, written in the Latin script.

The twentieth letter of the Romani alphabet, written in the Latin script.

The twenty-first letter of the Romani alphabet, written in the Latin script.

The nineteenth letter of the Romanian alphabet, called pe or pî and written in the Latin script.

The fourteenth letter of the Scottish Gaelic alphabet, written in the Latin script. It is preceded by o and followed by r. Its traditional name is beith bhog (“soft birch”).

The 22nd letter of the Serbo-Croatian Latin alphabet (gajica), preceded by o and followed by r.

The twenty-fourth letter of the Silesian alphabet, written in the Latin script.

The seventeenth letter of the Spanish alphabet, written in the Latin script.

The eighteenth letter of the Tagalog alphabet (Filipino alphabet), called pi and written in the Latin script.

The nineteenth letter of the Tagalog alphabet (Abecedario), called pe and written in the Latin script.

The fourteenth letter of the Tagalog alphabet (Abakada alphabet), called pa and written in the Latin script.

The twentieth letter of the Turkish alphabet, called pe and written in the Latin script.

The twentieth letter of the Turkmen alphabet, called pe and written in the Latin script.

The eighteenth letter of the Yoruba alphabet, called pí and written in the Latin script.

The sixteenth letter of the Zulu alphabet, written in the Latin script.

Source: wiktionary.org