P

P is the 16th letter of the Latin alphabet. Semitic Pê (mouth) as well as Greek Π or π (Pi) and the Etruscan and Latin letters that developed from the former alphabet all symbolized /p/, a plosive, unvoiced consonant. Those who speak Arabic usually have difficulty pronouncing this sound; they pronounce like b instead. Papa represents the letter P in the NATO phonetic alphabet.

Meanings for P

\n* In baseball, P is the abbreviation for the position of pitcher.\n* In biochemistry, P is the symbol for proline.\n* In chemistry, P is the symbol for the element phosphorus, or sometimes for phosphate.\n* In chess, P is sometimes used as a notation symbol for the pawn piece\n* In computer science, \n** P is an operation on a semaphore, used for process synchronisation.\n** In complexity theory, P is the set of decision problems solvable in polynomial time on a deterministic Turing machine; see Complexity classes P and NP.\n** <P> is the HTML tag for paragraphs.\n* Amongst drug users P is slang for pure methamphetamine.\n* In international licence plate codes, P stands for Portugal.\n* In mathematics, blackboard bold represents the prime numbers\n* In the Metric system, \n** p, Pico, is an SI prefix meaning 10^-12.\n** P, Peta, is an SI prefix meaning 10¹⁵\n** p is the symbol for the pond, a now obsolete unit of force; see kilopond.\n* In British coinage, it is the symbol for penny (pl. pence). i.e. 25p (25 pence).\n* In physics, \n** p is the symbol for momentum or pressure\n** P is the symbol power or polarisation; \n** In particle physics, p is the symbol for the proton.\n* In probability and statistics, \n** p denotes probability\n** the p-value of a given result in an experiment the is result's significance; that is, the probability of observing this result or a more extreme result, by chance alone.\n* In publishing, a circled P, Ⓟ, represents a copyright on a sound recording.\n* In symbolic logic, p is often used to denote a proposition as well as q and r. Two-letter combinations starting with P:\n*pa pb pc pd pe pf pg ph pi pj pk pl pm pn po pp pq pr ps pt pu pv pw px py pz