| progenitor | (noun) an ancestor in the direct line | Synonyms: primogenitor |
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| progeny | (noun) the immediate descendants of a person | Synonyms: issue, offspring |
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| progeria | (noun) a rare abnormality marked by premature aging (grey hair and wrinkled skin and stooped posture) in a child | - |
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| progesterone | (noun) a steroid hormone (trade name Lipo-Lutin) produced in the ovary; prepares and maintains the uterus for pregnancy | Synonyms: Lipo-Lutin |
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| progestin | (noun) any of a group of steroid hormones that have the effect of progesterone | Synonyms: progestogen |
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| progestogen | (noun) any of a group of steroid hormones that have the effect of progesterone | Synonyms: progestin |
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| prognathism | (noun) the condition of being prognathous; the condition of having a projecting jaw | - |
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| prognosis | (noun) a prediction of the course of a disease | Synonyms: medical prognosis, prospect |
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| (noun) a prediction about how something (as the weather) will develop | Synonyms: forecast |
| prognostic | (noun) a sign of something about to happen | Synonyms: omen, portent, presage, prodigy, prognostication |
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| prognostication | (noun) knowledge of the future (usually said to be obtained from a divine source) | Synonyms: prophecy, vaticination |
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| (noun) a statement made about the future | Synonyms: forecasting, foretelling, prediction |
| (noun) a sign of something about to happen | Synonyms: omen, portent, presage, prodigy, prognostic |
| prognosticator | (noun) someone who makes predictions of the future (usually on the basis of special knowledge) | Synonyms: forecaster, predictor, soothsayer |
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| program | (noun) a performance (or series of performances) at a public presentation | Synonyms: programme |
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| (noun) a series of steps to be carried out or goals to be accomplished | Synonyms: plan, programme |
| (noun) a system of projects or services intended to meet a public need | Synonyms: programme |
| (noun) an announcement of the events that will occur as part of a theatrical or sporting event | Synonyms: programme |
| (noun) a radio or television show | Synonyms: broadcast, programme |
| (noun) (computer science) a sequence of instructions that a computer can interpret and execute | Synonyms: computer program, computer programme, programme |
| (noun) a document stating the aims and principles of a political party | Synonyms: platform, political platform, political program |
| (noun) an integrated course of academic studies | Synonyms: course of study, curriculum, programme, syllabus |
| programing | (noun) creating a sequence of instructions to enable the computer to do something | Synonyms: computer programing, computer programming, programming |
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| (noun) setting an order and time for planned events | Synonyms: programming, scheduling |
| programma | (noun) an edict that has been publicly posted | - |
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| programmability | (noun) the abstract capability of being programmable. | - |
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| programme | (noun) a performance (or series of performances) at a public presentation | Synonyms: program |
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| (noun) a series of steps to be carried out or goals to be accomplished | Synonyms: plan, program |
| (noun) a system of projects or services intended to meet a public need | Synonyms: program |
| (noun) an announcement of the events that will occur as part of a theatrical or sporting event | Synonyms: program |
| (noun) a radio or television show | Synonyms: broadcast, program |
| (noun) (computer science) a sequence of instructions that a computer can interpret and execute | Synonyms: computer program, computer programme, program |
| (noun) an integrated course of academic studies | Synonyms: course of study, curriculum, program, syllabus |
| programmer | (noun) a person who designs and writes and tests computer programs | Synonyms: coder, computer programmer, software engineer |
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| programming | (noun) creating a sequence of instructions to enable the computer to do something | Synonyms: computer programing, computer programming, programing |
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| (noun) setting an order and time for planned events | Synonyms: programing, scheduling |
| progress | (noun) the act of moving forward (as toward a goal) | Synonyms: advance, advancement, forward motion, onward motion, procession, progression |
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| (noun) gradual improvement or growth or development | Synonyms: advancement |
| (noun) a movement forward | Synonyms: advance, progression |
| progression | (noun) the act of moving forward (as toward a goal) | Synonyms: advance, advancement, forward motion, onward motion, procession, progress |
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| (noun) a movement forward | Synonyms: advance, progress |
| (noun) a series with a definite pattern of advance | Synonyms: patterned advance |
| progressive | (noun) a person who favors a political philosophy of progress and reform and the protection of civil liberties | Synonyms: liberal, liberalist |
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| (noun) a tense of verbs used in describing action that is on-going | Synonyms: continuous tense, imperfect, imperfect tense, progressive tense |
| progressiveness | (noun) advancement toward better conditions or policies or methods | Synonyms: progressivity |
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| progressivism | (noun) the political orientation of those who favor progress toward better conditions in government and society | - |
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| progressivity | (noun) advancement toward better conditions or policies or methods | Synonyms: progressiveness |
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| progymnosperm | (noun) an ancestral fossil type from which modern gymnosperms are thought to have derived | - |
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| prohibition | (noun) the action of prohibiting or inhibiting or forbidding (or an instance thereof) | Synonyms: forbiddance, inhibition |
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| (noun) a decree that prohibits something | Synonyms: ban, proscription |
| (noun) refusal to approve or assent to | - |
| (noun) a law forbidding the sale of alcoholic beverages | - |
| (noun) the period from 1920 to 1933 when the sale of alcoholic beverages was prohibited in the United States by a constitutional amendment | Synonyms: prohibition era |
| prohibitionist | (noun) a reformer who opposes the use of intoxicating beverages | Synonyms: dry |
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| project | (noun) any piece of work that is undertaken or attempted | Synonyms: labor, labour, task, undertaking |
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| (noun) a planned undertaking | Synonyms: projection |
| projectile | (noun) a weapon that is forcibly thrown or projected at a targets but is not self-propelled | Synonyms: missile |
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| (noun) any vehicle self-propelled by a rocket engine | Synonyms: rocket |
| projection | (noun) the act of expelling or projecting or ejecting | Synonyms: ejection, expulsion, forcing out |
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| (noun) the act of projecting out from something | Synonyms: jut, jutting, protrusion |
| (noun) any structure that branches out from a central support | - |
| (noun) the representation of a figure or solid on a plane as it would look from a particular direction | - |
| (noun) a planned undertaking | Synonyms: project |
| (noun) a prediction made by extrapolating from past observations | - |
| (noun) the projection of an image from a film onto a screen | - |
| (noun) the acoustic phenomenon that gives sound a penetrating quality | Synonyms: acoustic projection, sound projection |
| (noun) (psychiatry) a defense mechanism by which your own traits and emotions are attributed to someone else | - |
| (noun) any solid convex shape that juts out from something | - |
| projectionist | (noun) the person who operates the projector in a movie house | - |
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| projector | (noun) an optical instrument that projects an enlarged image onto a screen | - |
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| (noun) an optical device for projecting a beam of light | - |
| prokaryote | (noun) a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma | Synonyms: procaryote |
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| prolactin | (noun) gonadotropic hormone secreted by the anterior pituitary; in females it stimulates growth of the mammary glands and lactation after parturition | Synonyms: lactogenic hormone, luteotropin |
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| prolamine | (noun) a simple protein found in plants | - |
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| prolapse | (noun) the slipping or falling out of place of an organ (as the uterus) | Synonyms: descensus, prolapsus |
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| prolapsus | (noun) the slipping or falling out of place of an organ (as the uterus) | Synonyms: descensus, prolapse |
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| prole | (noun) a member of the working class (not necessarily employed) | Synonyms: proletarian, worker |
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| prolegomenon | (noun) a preliminary discussion inserted at the beginning of a book or treatise | - |
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| prolepsis | (noun) anticipating and answering objections in advance | - |
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| proletarian | (noun) a member of the working class (not necessarily employed) | Synonyms: prole, worker |
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| proletarianism | (noun) The condition or political position of a member of the working class. | - |
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| proletariat | (noun) a social class comprising those who do manual labor or work for wages | Synonyms: labor, labour, working class |
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| proliferation | (noun) growth by the rapid multiplication of parts | - |
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| (noun) a rapid increase in number (especially a rapid increase in the number of deadly weapons) | - |
| prolificacy | (noun) the property of producing abundantly and sustaining vigorous and luxuriant growth | Synonyms: fertility, rankness, richness |
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| proline | (noun) an amino acid that is found in many proteins (especially collagen) | - |
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| prolixity | (noun) boring verbosity | Synonyms: long-windedness, prolixness, windiness, wordiness |
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| prolixness | (noun) boring verbosity | Synonyms: long-windedness, prolixity, windiness, wordiness |
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| prologue | (noun) an introduction to a play | - |
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| prolongation | (noun) the act of prolonging something | Synonyms: lengthening, perpetuation, protraction |
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| (noun) amount or degree or range to which something extends | Synonyms: extension, lengthiness |
| (noun) the consequence of being lengthened in duration | Synonyms: continuation, lengthiness, protraction |
| prolonge | (noun) a rope fitted with a hook and used for towing a gun carriage | - |
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| prolusion | (noun) exercising in preparation for strenuous activity | Synonyms: tune-up, warm-up |
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| (noun) a short introductory essay preceding the text of a book | Synonyms: foreword, preface |
| prom | (noun) a formal ball held for a school class toward the end of the academic year | Synonyms: promenade |
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| promenade | (noun) a leisurely walk (usually in some public place) | Synonyms: amble, perambulation, saunter, stroll |
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| (noun) a march of all the guests at the opening of a formal dance | - |
| (noun) a square dance figure; couples march counterclockwise in a circle | - |
| (noun) a public area set aside as a pedestrian walk | Synonyms: mall |
| (noun) a formal ball held for a school class toward the end of the academic year | Synonyms: prom |
| promethazine | (noun) antihistamine (trade name Phenergan) used to treat allergies; also an antiemetic used to treat motion sickness | Synonyms: Phenergan |
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| promethium | (noun) a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium | Synonyms: atomic number 61, Pm |
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| prominence | (noun) relative importance or fame | - |
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| (noun) something that bulges out or is protuberant or projects from its surroundings | Synonyms: bulge, bump, excrescence, extrusion, gibbosity, gibbousness, hump, jut, protrusion, protuberance, swelling |
| (noun) the state of being prominent: widely known or eminent | - |
| promiscuity | (noun) indulging in promiscuous (casual and indiscriminate) sexual relations | Synonyms: promiscuousness, sleeping around |
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| promiscuousness | (noun) indulging in promiscuous (casual and indiscriminate) sexual relations | Synonyms: promiscuity, sleeping around |
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| promise | (noun) grounds for feeling hopeful about the future | Synonyms: hope |
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| (noun) a verbal commitment by one person to another agreeing to do (or not to do) something in the future | - |
| promisee | (noun) a person to whom a promise is made | - |
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| promiser | (noun) a person who makes a promise | Synonyms: promisor |
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| promisor | (noun) a person who makes a promise | Synonyms: promiser |
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| promo | (noun) a message issued in behalf of some product or cause or idea or person or institution | Synonyms: packaging, promotion, promotional material, publicity |
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| promontory | (noun) a natural elevation (especially a rocky one that juts out into the sea) | Synonyms: foreland, head, headland |
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| promoter | (noun) someone who is an active supporter and advocate | Synonyms: booster, plugger |
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| (noun) a sponsor who books and stages public entertainments | Synonyms: impresario, showman |
| promotion | (noun) act of raising in rank or position | - |
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| (noun) the advancement of some enterprise | Synonyms: forwarding, furtherance |
| (noun) a message issued in behalf of some product or cause or idea or person or institution | Synonyms: packaging, promo, promotional material, publicity |
| (noun) encouragement of the progress or growth or acceptance of something | Synonyms: advancement, furtherance |
| promposal | (noun) The act of asking someone to go to a prom with you | - |
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| prompt | (noun) a cue given to a performer (usually the beginning of the next line to be spoken) | Synonyms: prompting |
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| (noun) (computer science) a symbol that appears on the computer screen to indicate that the computer is ready to receive a command | Synonyms: command prompt |
| promptbook | (noun) the copy of the playscript used by the prompter | Synonyms: prompt copy |
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| prompter | (noun) a device that displays words for people to read | Synonyms: autocue |
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| (noun) someone who assists a performer by providing the next words of a forgotten speech | Synonyms: theater prompter |
| prompting | (noun) persuasion formulated as a suggestion | Synonyms: suggestion |
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| (noun) a cue given to a performer (usually the beginning of the next line to be spoken) | Synonyms: prompt |
| promptitude | (noun) the characteristic of doing things without delay | Synonyms: promptness |
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| promptness | (noun) the characteristic of doing things without delay | Synonyms: promptitude |
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| (noun) the quality or habit of adhering to an appointed time | Synonyms: punctuality |
| promulgation | (noun) the formal act of proclaiming; giving public notice | Synonyms: proclamation |
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| (noun) a public statement containing information about an event that has happened or is going to happen | Synonyms: announcement |
| (noun) the official announcement of a new law or ordinance whereby the law or ordinance is put into effect | - |
| promulgator | (noun) (law) one who promulgates laws (announces a law as a way of putting it into execution) | - |
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| promycelium | (noun) the basidium of various fungi | - |
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| promythium | (noun) A section of text that comes before the story. | - |
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| pronation | (noun) rotation of the hands and forearms so that the palms face downward | - |
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| pronator | (noun) a muscle that produces or assists in pronation | - |
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| proneness | (noun) being disposed to do something | - |
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| prong | (noun) a pointed projection | - |
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| prongbuck | (noun) fleet antelope-like ruminant of western North American plains with small branched horns | Synonyms: American antelope, Antilocapra americana, pronghorn, pronghorn antelope |
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| pronghorn | (noun) fleet antelope-like ruminant of western North American plains with small branched horns | Synonyms: American antelope, Antilocapra americana, prongbuck, pronghorn antelope |
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| pronominal | (noun) a phrase that functions as a pronoun | Synonyms: pronominal phrase |
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| pronoun | (noun) a function word that is used in place of a noun or noun phrase | - |
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| pronouncement | (noun) an authoritative declaration | Synonyms: dictum, say-so |
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| pronucleus | (noun) the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote | - |
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| pronunciamento | (noun) a public declaration of intentions (as issued by a political party or government) | Synonyms: manifesto |
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| pronunciation | (noun) the manner in which someone utters a word | - |
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| (noun) the way a word or a language is customarily spoken | Synonyms: orthoepy |
| proof | (noun) the act of validating; finding or testing the truth of something | Synonyms: substantiation, validation |
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| (noun) a trial photographic print from a negative | - |
| (noun) any factual evidence that helps to establish the truth of something | Synonyms: cogent evidence |
| (noun) a formal series of statements showing that if one thing is true something else necessarily follows from it | - |
| (noun) (printing) an impression made to check for errors | Synonyms: test copy, trial impression |
| (noun) a measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume) | - |
| proofreader | (noun) someone who reads proof in order to find errors and mark corrections | Synonyms: reader |
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| prop | (noun) a support placed beneath or against something to keep it from shaking or falling | - |
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| (noun) a propeller that rotates to push against air | Synonyms: airplane propeller, airscrew |
| (noun) any movable articles or objects used on the set of a play or movie | Synonyms: property |
| propaedeutic | (noun) a course that provides an introduction to an art or science (or to more advanced study generally) | Synonyms: propaedeutics |
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| propaedeutics | (noun) a course that provides an introduction to an art or science (or to more advanced study generally) | Synonyms: propaedeutic |
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| propaganda | (noun) information that is spread for the purpose of promoting some cause | - |
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| propagandist | (noun) a person who disseminates messages calculated to assist some cause or some government | - |
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| propagation | (noun) the act of producing offspring or multiplying by such production | Synonyms: generation, multiplication |
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| (noun) the spreading of something (a belief or practice) into new regions | Synonyms: extension |
| (noun) the movement of a wave through a medium | - |
| propagator | (noun) someone who spreads the news | Synonyms: disseminator |
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| (noun) someone who propagates plants (as under glass) | - |
| propanal | (noun) a colorless liquid aldehyde | Synonyms: propionaldehyde |
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