American Heritage® Dictionary of the English Language, Fourth Edition
- n. The 16th letter of the modern English alphabet.
- n. Any of the speech sounds represented by the letter p.
- n. The 16th in a series.
- n. Something shaped like the letter P.
- n. A hypothesized documentary source of certain portions of the Pentateuch that have a formal style, contain genealogical lists and descriptions of rituals, and use the Tetragrammaton to refer to God.
- Physics The symbol for momentum.
- abbr. piano (musical direction)
- abbr. proton.
Century Dictionary and Cyclopedia
- The sixteenth letter and twelfth consonant of the English alphabet, having a corresponding position in other alphabets. The scheme of parallel forms, as given in the case of the other letters (see especially A), is as follows:
R). P in all these alphabets stands for the same unvarying sound: namely, for the surd labial mute (corresponding to b as sonant, and m as nasal), made with closure of the lips, during the maintenance of which closure there is complete silence, its character being brought to light by explosion upon the following sound. The p-sound is in English much less common (below a third) than the t-sound, and slightly less common (about four fifths) than the k-sound. The character p has no varieties or irregularities of pronunciation in English save as it is silent at the beginning of a few Greek words, as psalm, pneumatic, pteropod, and, much more rarely, elsewhere, as in receipt, accompt. It enters into one important digraph, namely ph, found in numerous words of classical origin, and pronounced as f (but originally as written, or as an aspirated p, a p with an audible h after it, as in our compound uphill). (See ph.) According to the general law of correspondence, a p in the Germanic part of our language should represent an original b; but b appears to have been almost altogether wanting in the primitive language of our family; and hence our p, when not of classical origin, or borrowed from elsewhere, is the result of some irregular process.
- As a medieval numeral, 400; with a dash over it , 400,000.
- As a symbol: In chem., the symbol for phosphorus.
- In mathematics, the Greek capital II denotes a continued product.
- Thus, , for which
Π(1 + m) is also written, denotes the product (1 + m) m (m − 1) … 3.2.1. The small Greek letter πdenotes the ratio of the circumference to the diameter, or 3.14159265359 + . This notation was introduced by Euler. The other form of Greek minuscule, ω%26, denotes in astronomy the longitude of the perihelion.
- An abbreviation: Of post in P. M., post meridiem, afternoon, and P. S., postscript.
- [lowercase] Of page (past participle standing for pages).
- [lowercase] In music, of piano, softly (past participle standing for pianissimo, very softly)
- [lowercase] In a ship's log-book, of passing showers.
- [lowercase] In zoology: Of partim. In dental formulas, same as pm. In ichthyology, of pectoral (fin). In echinoderms, of polyplacid.
- In medicine, of (Optic) papilla; pupil; pugillus, handful.
- n. An abbreviation of participial adjective, employed in this dictionary.
- n. An abbreviation of the Latin partes æquales, equal parts.
- n. An abbreviation of Pharmacopœia Britannica, British Pharmacopœia.
- n. An abbreviation of Privy Councilor; of police constable.
- n. An abbreviation of Pharmacopœia Dublinensis, Dublin Pharmacopœia.
- n. An abbreviation of Pharmacopœia Edinensis, Edinburgh Pharmacopœia; of Protestant Episcopal.
- n. An abbreviation: of post meridiem, ‘after noon or midday’ (also P. M., p. m.): frequently used as synonymous with afternoon or evening;
- n. of postmaster;
- n. of peculiar meter.
- n. An abbreviation: of post-office;
- n. (nautical) of petty officer.
- n. An abbreviation of postscript; (theatrical) of prompt-side.
- The initial of pressure, used in formulæ for fluid pressure, as of liquids or gases upon an area. In British and American writings it is usually expressed in pounds per square inch or pounds per square foot, the zero of pressures being the vacuum line as given by the barometer, or about 14.7 pounds below the pressure of the atmosphere. In metric units it is usually expressed in kilograms per square centimeter.
- In mechan., a symbol for power.
- In psychophysics, the symbol for the Fechnerian time-error.
- An abbreviation: Of population.
- Of the Latin pars, apart.
- [lowercase or cap.] Of participle.
- [lowercase or cap.] Of past.
- Of the Latin pater, father.
- [lowercase or cap.] Of penny.
- [lowercase or cap.] Of pint.
- [lowercase or cap.] Of pipe.
- [lowercase or cap.] Of pole.
- Of the Latin pondere, by weight.
- In electro-technics, of power.
- Of president.
- Of prince.
- Of professor.
- An abbreviation of Post Adjutant.
- An abbreviation of particular average, a term used in marine-insurance policies. See average, n., 1. .
- n. An abbreviation of the Latin Philosophiæ Baccalaureus, Bachelor of Philosophy;
- n. of Primitive Baptist.
- n. An abbreviation of the Latin Patres Conscripti, Conscript Fathers;
- n. of Perpetual Curate;
- n. [lowercase] of the Latin per centum, by the hundred;
- n. of the Latin pondus civile, avoirdupois weight;
- n. of Post Commander;
- n. [lowercase] of post- or postal-card;
- n. [lowercase] of the Latin post consulatum, after the consulship;
- n. of Principal Conductor;
- n. of Privy Council.
- n. An abbreviation of potential difference;
- n. of the Latin Philosophiæ Doctor, Doctor of Philosophy.
- n. An abbreviation of Presiding Elder.
- n. An abbreviation of the Italian piu forte, a little louder
- n. [caps.] of Procurator-Fiscal.
- n. An abbreviation of Past Grand
- n. of the Latin Pharmacopœia Germanica, German Pharmacopœia.
- n. In ceramics, the abbreviation of ‘Paris granite,’ a trade-name.
- n. An abbreviation of Philippine Islands.
- n. An abbreviation of Justice of the Peace
- n. of Police Justice
- n. of Presiding Judge
- n. of Probate Judge.
- n. An abbreviation of Paradise Lost
- n. of Poet Laureate
- n. [lowercase or cap.] in psychology, of partial limen.
- An abbreviation of Pacific Mail
- of Past Master
- of Past Midshipman
- of Paymaster.
- n. An abbreviation of Postal Order
- n. of Province of Ontario.
- n. An abbreviation of Parish Priest;
- n. of the Latin Paler Patriæ, Father of his Country;
- n. [lowercase] in law, of per procuration, done by proxy;
- n. of the Latin punctum proximum, nearest point (namely, of accommodation to which the eye can adjust itself).
- n. An abbreviation of Previous Question;
- n. of Province of Quebec.
- n. An abbreviation of the Latin Populus Romanus, the Roman People;
- n. of Porto Rico;
- n. of the Latin punctum remotum, farthest point (namely, of accommodation to which the eye can adjust itself).
- An abbreviation [lowercase] of passed School of Instruction (of Officers);
- [capitalized] of Permanent Secretary;
- [capitalized] of Privy Seal.
- An abbreviation [lowercase or cap.] of post-town
- of pupil-teacher.
- n. An abbreviation of post-village.
- n. The sixteenth letter of the basic modern Latin alphabet.
- n. voiceless bilabial plosive.
- n. The sixteenth letter of the English alphabet, called pee and written in the Latin script.
- n. The ordinal number sixteenth, derived from this letter of the English alphabet, called pee and written in the Latin script.
- abbr. post, meaning after
- abbr. Music symbol for piano (play softly)
- abbr. page (plural pp)
- abbr. UK penny; pence.
- abbr. knitting purl
- abbr. Internet pretty (as an intensifier)
GNU Webster's 1913
- the sixteenth letter of the English alphabet, is a nonvocal consonant whose form and value come from the Latin, into which language the letter was brought, through the ancient Greek, from the Phœnician, its probable origin being Egyptian. Etymologically P is most closely related to b, f, and v; as hobble, hopple; father, paternal; recipient, receive. See b, f, and m.
- n. a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms
- n. the 16th letter of the Roman alphabet
“which one of the following will execute faster? int p = 2; p++; OR p = p+1; OR p+ = 1; and y?? is it p++ bcoz it is a single instruction?? ... nd the rest r multiple ...”
“Now, assume that a given sentence, s, corresponds to the fact that p; and assume that ˜p™ and ˜q™ are sentences with the same truth-value.”
“Where p is a permutation of objects on a domain D, we can define the p-transform function p* as follows: if x is an object in D, p* (x) =”
“On such deflationary views of self-deception, one need only hold a false belief p, possess evidence that ~p, and have some desire or emotion that explains why p is believed and retained.”
“Traditionally, self-deception has been modeled on interpersonal deception, where A intentionally gets B to believe some proposition p, all the while knowing or believing truly ~p.”
“In general, if one possesses evidence that one normally would take to support ~p and yet believes p instead due to some desire, emotion or other motivation one has related to”
“It is the relative subjective costs of falsely believing p and ~p that explains why desire or other motivation biases belief in some circumstances and not others.”
“Mele (2001), drawing on empirical research regarding lay hypothesis testing, argues that selectivity may be explained in terms of the agent's assessment of the relative costs of erroneously believing p and ~p.”
“One can believe p and believe ~p without believing”
“If we say that p is true if and only if it coheres with a specified set of propositions, we may be asked about the truth conditions of ˜p coheres with a specified set.™”
These user-created lists contain the word ‘p’.
See also The Phonetic alphabet by oroboros.
Name Sym # Wt
actinium Ac 89 (227)
aluminum Al 13 26.98
americium Am 95 (243)
antimony Sb 51 121.7
argon Ar 18 39.94
arsenic As 33 74.92
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