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.

P is also:

• In chemistry, P is the symbol for the element phosphorus.
• 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.
• In physics, p is the symbol for momentum, also for pressure; P for power and polarisation; p is also the symbol for the proton.
• As p, the symbol for the pond, a now obsolete unit of force, see kilopond.
• In units the Pico SI Prefix p stands for pico, P for Peta.
• In symbolic logic, p is often used to denote a proposition as well as q and r.
• In the study of probability, p stands for probability.
• In statistics, 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.

Two-letter combinations starting with P:

• 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

Words beginning with the letter P, suitable for teaching children the alphabet

palace paper parrot Patty Paul pea peach pencil penguin Pennsylvania

people peppermint Peter Pan photograph pin pink planet plate please

pony potato princess principal Psalm pumpkin purple purr

Referenced By