| orchestrator | (noun) an arranger who writes for orchestras | - |
|---|
| originator | (noun) someone who creates new things | Synonyms: conceiver, mastermind |
|---|
| oscillator | (noun) generator that produces sonic oscillations or alternating current | - |
|---|
| osculator | (noun) someone who kisses | Synonyms: kisser |
|---|
| osmoreceptor | (noun) sensory end organ that responds to changes in osmotic pressure | - |
|---|
| otorhinolaryngologist | (noun) a specialist in the disorders of the ear or nose or throat | Synonyms: ear-nose-and-throat doctor, ENT man, otolaryngologist, rhinolaryngologist |
|---|
| otorhinolaryngology | (noun) the medical specialty that deals with diseases of the ear, nose and throat | Synonyms: otolaryngology, rhinolaryngology |
|---|
| otorrhea | (noun) discharge from the external ear | - |
|---|
| ovipositor | (noun) egg-laying tubular structure at the end of the abdomen in many female insects and some fishes | - |
|---|
| oviraptorid | (noun) advanced carnivorous theropods, characterized by their toothless, parrot-like beaks and, in several cases, elaborate crests | - |
|---|
| pastor | (noun) a person authorized to conduct religious worship | Synonyms: curate, minister, minister of religion, parson, rector |
|---|
| pastoral | (noun) a musical composition that evokes rural life | Synonyms: idyl, idyll, pastorale |
|---|
| (noun) a literary work idealizing the rural life (especially the life of shepherds) | - |
| (noun) a letter from a pastor to the congregation | - |
| pastorale | (noun) a musical composition that evokes rural life | Synonyms: idyl, idyll, pastoral |
|---|
| pastorate | (noun) the position of pastor | Synonyms: pastorship |
|---|
| (noun) pastors collectively | - |
| pastorship | (noun) the position of pastor | Synonyms: pastorate |
|---|
| pectoral | (noun) an adornment worn on the chest or breast | Synonyms: pectoral medallion |
|---|
| (noun) either of two large muscles of the chest | Synonyms: musculus pectoralis, pecs, pectoral muscle, pectoralis |
| pectoralis | (noun) either of two large muscles of the chest | Synonyms: musculus pectoralis, pecs, pectoral, pectoral muscle |
|---|
| peculator | (noun) someone who violates a trust by taking (money) for his own use | Synonyms: defalcator, embezzler |
|---|
| pellitory | (noun) a small Mediterranean plant containing a volatile oil once used to relieve toothache | Synonyms: Anacyclus pyrethrum, pellitory-of-Spain |
|---|
| (noun) herb that grows in crevices having long narrow leaves and small pink apetalous flowers | Synonyms: Parietaria difusa, pellitory-of-the-wall, wall pellitory |
| penetrator | (noun) an intruder who passes into or through (often by overcoming resistance) | - |
|---|
| perambulator | (noun) a small vehicle with four wheels in which a baby or child is pushed around | Synonyms: baby buggy, baby carriage, carriage, go-cart, pram, pushchair, pusher, stroller |
|---|
| percolator | (noun) a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans | - |
|---|
| perpetrator | (noun) someone who perpetrates wrongdoing | Synonyms: culprit |
|---|
| persecutor | (noun) someone who torments | Synonyms: tormenter, tormentor |
|---|
| photocoagulator | (noun) surgical instrument containing a laser for use in photocoagulation | - |
|---|
| photoretinitis | (noun) damage to the retina resulting from exposure of the eye to the sun without adequate protection | - |
|---|
| pictorial | (noun) a periodical (magazine or newspaper) containing many pictures | - |
|---|
| playactor | (noun) an actor who travels around the country presenting plays | Synonyms: barnstormer, play-actor, trouper |
|---|
| pollinator | (noun) an insect that carries pollen from one flower to another | - |
|---|
| postdoctoral | (noun) a grant that funds postdoctoral study or research | Synonyms: post doc, postdoc |
|---|
| postulator | (noun) someone who assumes or takes something for granted as the basis of an argument | - |
|---|
| (noun) (Roman Catholic Church) someone who proposes or pleads for a candidate for beatification or canonization | - |
| potoroo | (noun) Australian rat kangaroos | - |
|---|
| praetor | (noun) an annually elected magistrate of the ancient Roman Republic | Synonyms: pretor |
|---|
| praetorium | (noun) the tent of an ancient Roman general | Synonyms: pretorium |
|---|
| praetorship | (noun) the office of praetor | - |
|---|
| precentor | (noun) the musical director of a choir | Synonyms: cantor, choirmaster |
|---|
| precentorship | (noun) the position of precentor | - |
|---|
| preceptor | (noun) teacher at a university or college (especially at Cambridge or Oxford) | Synonyms: don |
|---|
| preceptorship | (noun) the position of preceptor | - |
|---|
| precipitator | (noun) removes dust particles from gases by electrostatic precipitation | Synonyms: Cottrell precipitator, electrostatic precipitator |
|---|
| predator | (noun) any animal that lives by preying on other animals | Synonyms: predatory animal |
|---|
| (noun) someone who attacks in search of booty | Synonyms: marauder, piranha, vulture |
| predicator | (noun) an expression that predicates | - |
|---|
| predictor | (noun) a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival | - |
|---|
| (noun) information that supports a probabilistic estimate of future events | - |
| (noun) someone who makes predictions of the future (usually on the basis of special knowledge) | Synonyms: forecaster, prognosticator, soothsayer |
| preemptor | (noun) a bidder in bridge who makes a preemptive bid | Synonyms: pre-emptor |
|---|
| (noun) someone who acquires land by preemption | Synonyms: pre-emptor |
| prehistory | (noun) the time during the development of human culture before the appearance of the written word | Synonyms: prehistoric culture |
|---|
| prestidigitator | (noun) someone who performs magic tricks to amuse an audience | Synonyms: conjurer, conjuror, illusionist, magician |
|---|
| pretor | (noun) an annually elected magistrate of the ancient Roman Republic | Synonyms: praetor |
|---|
| pretorium | (noun) the tent of an ancient Roman general | Synonyms: praetorium |
|---|
| prevaricator | (noun) a person who has lied or who lies repeatedly | Synonyms: liar |
|---|
| primogenitor | (noun) an ancestor in the direct line | Synonyms: progenitor |
|---|
| procrastinator | (noun) someone who postpones work (especially out of laziness or habitual carelessness) | Synonyms: cunctator, postponer |
|---|
| proctor | (noun) someone who supervises (an examination) | Synonyms: monitor |
|---|
| proctorship | (noun) the position of proctor | - |
|---|
| procurator | (noun) (ancient Rome) someone employed by the Roman Emperor to manage finance and taxes | - |
|---|
| (noun) a person authorized to act for another | Synonyms: placeholder, proxy |
| progenitor | (noun) an ancestor in the direct line | Synonyms: primogenitor |
|---|
| prognosticator | (noun) someone who makes predictions of the future (usually on the basis of special knowledge) | Synonyms: forecaster, predictor, soothsayer |
|---|
| projector | (noun) an optical instrument that projects an enlarged image onto a screen | - |
|---|
| (noun) an optical device for projecting a beam of light | - |
| promontory | (noun) a natural elevation (especially a rocky one that juts out into the sea) | Synonyms: foreland, head, headland |
|---|
| promulgator | (noun) (law) one who promulgates laws (announces a law as a way of putting it into execution) | - |
|---|
| pronator | (noun) a muscle that produces or assists in pronation | - |
|---|
| propagator | (noun) someone who spreads the news | Synonyms: disseminator |
|---|
| (noun) someone who propagates plants (as under glass) | - |
| proprietor | (noun) (law) someone who owns (is legal possessor of) a business | Synonyms: owner |
|---|
| proprietorship | (noun) an unincorporated business owned by a single person who is responsible for its liabilities and entitled to its profits | Synonyms: proprietary |
|---|
| proprioceptor | (noun) special nerve endings in the muscles and tendons and other organs that respond to stimuli regarding the position and movement of the body | - |
|---|
| prosecutor | (noun) a government official who conducts criminal prosecutions on behalf of the state | Synonyms: prosecuting attorney, prosecuting officer, public prosecutor |
|---|
| prospector | (noun) someone who explores an area for mineral deposits | - |
|---|
| protector | (noun) a person who cares for persons or property | Synonyms: defender, guardian, shielder |
|---|
| protectorate | (noun) a state or territory partly controlled by (but not a possession of) a stronger state but autonomous in internal affairs; protectorates are established by treaty | Synonyms: associated state |
|---|
| protectorship | (noun) the position of protector | - |
|---|
| protohistory | (noun) the study of humans prior to the invention of writing | Synonyms: protoanthropology |
|---|
| protractor | (noun) drafting instrument used to draw or measure angles | - |
|---|
| purgatory | (noun) (theology) in Roman Catholic theology the place where those who have died in a state of grace undergo limited torment to expiate their sins | - |
|---|
| (noun) a temporary condition of torment or suffering | - |
| purificator | (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. | Synonyms: emunctorium, purificatorium |
|---|
| purificatorium | (noun) a white linen cloth which is used to wipe the chalice after each communicant partakes. | Synonyms: emunctorium, purificator |
|---|
| quaestor | (noun) any of several public officials of ancient Rome (usually in charge of finance and administration) | - |
|---|
| radiator | (noun) a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan | - |
|---|
| (noun) heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings | - |
| (noun) any object that radiates energy | - |
| rainstorm | (noun) a storm with rain | - |
|---|
| raptor | (noun) any of numerous carnivorous birds that hunt and kill other animals | Synonyms: bird of prey, raptorial bird |
|---|
| ratiocinator | (noun) someone who reasons logically | Synonyms: reasoner |
|---|
| reactor | (noun) (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements | Synonyms: nuclear reactor |
|---|
| (noun) an electrical device used to introduce reactance into a circuit | - |
| receptor | (noun) an organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation | Synonyms: sense organ, sensory receptor |
|---|
| (noun) a cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological response | - |
| rector | (noun) a person authorized to conduct religious worship | Synonyms: curate, minister, minister of religion, parson, pastor |
|---|
| rectorate | (noun) the office or station of a rector | Synonyms: rectorship |
|---|
| rectorship | (noun) the office or station of a rector | Synonyms: rectorate |
|---|
| rectory | (noun) an official residence provided by a church for its parson or vicar or rector | Synonyms: parsonage, vicarage |
|---|
| redactor | (noun) someone who puts text into appropriate form for publication | Synonyms: redact, reviser, rewrite man, rewriter |
|---|
| reenactor | (noun) a person who enacts a role in an event that occurred earlier | - |
|---|
| refectory | (noun) a communal dining-hall (usually in a monastery) | - |
|---|
| reflector | (noun) device that reflects radiation | - |
|---|
| (noun) optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece | Synonyms: reflecting telescope |
| reformatory | (noun) correctional institution for the detention and discipline and training of young or first offenders | Synonyms: reform school, training school |
|---|
| refractoriness | (noun) the trait of being unmanageable | Synonyms: recalcitrance, recalcitrancy, unmanageableness |
|---|
| refractory | (noun) lining consisting of material with a high melting point; used to line the inside walls of a furnace | Synonyms: furnace lining |
|---|
| refrigerator | (noun) white goods in which food can be stored at low temperatures | Synonyms: icebox |
|---|
| regulator | (noun) any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc. | - |
|---|
| (noun) a control that maintains a steady speed in a machine (as by controlling the supply of fuel) | Synonyms: governor |
| (noun) an official responsible for control and supervision of a particular activity or area of public interest | - |
| remunerator | (noun) a person who pays money for something | Synonyms: payer |
|---|
| renovator | (noun) a skilled worker who is employed to restore or refinish buildings or antique furniture | Synonyms: preserver, refinisher, restorer |
|---|
| repertory | (noun) a storehouse where a stock of things is kept | - |
|---|
| (noun) the entire range of skills or aptitudes or devices used in a particular field or occupation | Synonyms: repertoire |
| (noun) a collection of works (plays, songs, operas, ballets) that an artist or company can perform and do perform for short intervals on a regular schedule | Synonyms: repertoire |
| (noun) a theatrical company that performs plays from a repertoire | Synonyms: repertory company, stock company |
| repository | (noun) a facility where things can be deposited for storage or safekeeping | Synonyms: deposit, depositary, depository |
|---|
| (noun) a burial vault (usually for some famous person) | Synonyms: monument |
| (noun) a person to whom a secret is entrusted | Synonyms: secretary |
| resistor | (noun) an electrical device that resists the flow of electrical current | Synonyms: resistance |
|---|
| resonator | (noun) any system that resonates | - |
|---|
| (noun) an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude | Synonyms: resonant circuit |
| (noun) a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves | Synonyms: cavity resonator, resonating chamber |