| proselyte | (noun) a new convert; especially a gentile converted to Judaism | - |
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| prostate | (noun) a firm partly muscular chestnut sized gland in males at the neck of the urethra; produces a viscid secretion that is the fluid part of semen | Synonyms: prostate gland |
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| prostitute | (noun) a woman who engages in sexual intercourse for money | Synonyms: bawd, cocotte, cyprian, fancy woman, harlot, lady of pleasure, sporting lady, tart, whore, woman of the street, working girl |
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| 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 |
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| pseudohermaphrodite | (noun) someone having external genitalia of one sex and internal sex organs of the other sex; not a true hermaphrodite because there is no ambiguity in the sex of the external genitalia and hence no question about gender at birth | - |
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| psilophyte | (noun) any plant of the order Psilophytales: a savannah plant | - |
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| pteridophyte | (noun) plants having vascular tissue and reproducing by spores | Synonyms: nonflowering plant |
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| pyrite | (noun) a common mineral (iron disulfide) that has a pale yellow color | Synonyms: fool's gold, iron pyrite |
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| pyrolusite | (noun) a mineral consisting of manganese dioxide; an important source of manganese | - |
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| pyromorphite | (noun) a mineral consisting of lead chloride and phosphate; a minor source of lead | Synonyms: green lead ore |
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| pyrophosphate | (noun) a salt or ester of pyrophosphoric acid | - |
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| pyrophyllite | (noun) a white or greenish aluminum silicate mineral (resembles talc) | - |
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| pyrrhotite | (noun) a brownish iron sulfide mineral (FeS) having weak magnetic properties | Synonyms: magnetic pyrites, pyrrhotine |
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| quadrate | (noun) a square-shaped object | - |
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| (noun) a cubelike object | - |
| quadrumvirate | (noun) a group of four men | - |
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| quadruplicate | (noun) any four copies; any of four things that correspond to one another exactly | - |
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| quartette | (noun) a musical composition for four performers | Synonyms: quartet |
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| (noun) four people considered as a unit | Synonyms: foursome, quartet |
| (noun) a set of four similar things considered as a unit | Synonyms: quadruple, quadruplet, quartet |
| (noun) four performers or singers who perform together | Synonyms: quartet |
| quartzite | (noun) hard metamorphic rock consisting essentially of interlocking quartz crystals | - |
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| quintette | (noun) a musical composition for five performers | Synonyms: quintet |
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| (noun) five people considered as a unit | Synonyms: fivesome, quintet |
| (noun) a set of five similar things considered as a unit | Synonyms: quintet, quintuple, quintuplet |
| (noun) five performers or singers who perform together | Synonyms: quintet |
| quote | (noun) a punctuation mark used to attribute the enclosed text to someone else | Synonyms: inverted comma, quotation mark |
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| (noun) a passage or expression that is quoted or cited | Synonyms: citation, quotation |
| rabbinate | (noun) the office or function of a rabbi | - |
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| (noun) rabbis collectively | - |
| rate | (noun) the relative speed of progress or change | Synonyms: pace |
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| (noun) amount of a charge or payment relative to some basis | Synonyms: charge per unit |
| (noun) a quantity or amount or measure considered as a proportion of another quantity or amount or measure | - |
| (noun) a magnitude or frequency relative to a time unit | - |
| ratite | (noun) flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches, cassowaries, emus, moas, rheas, kiwis, elephant birds | Synonyms: flightless bird, ratite bird |
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| ravigote | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigotte |
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| ravigotte | (noun) veloute sauce seasoned with chopped chervil, chives, tarragon, shallots and capers | Synonyms: ravigote |
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| rebate | (noun) a rectangular groove made to hold two pieces together | Synonyms: rabbet |
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| (noun) a refund of some fraction of the amount paid | Synonyms: discount |
| rectorate | (noun) the office or station of a rector | Synonyms: rectorship |
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| remote | (noun) a device that can be used to control a machine or apparatus from a distance | Synonyms: remote control |
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| rensselaerite | (noun) a kind of soft talc; sometimes used as wood filler | - |
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| rente | (noun) income from capital investment paid in a series of regular payments | Synonyms: annuity |
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| repatriate | (noun) a person who has returned to the country of origin or whose citizenship has been restored | - |
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| reprobate | (noun) a person without moral scruples | Synonyms: miscreant |
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| repute | (noun) the state of being held in high esteem and honor | Synonyms: reputation |
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| requisite | (noun) anything indispensable | Synonyms: essential, necessary, necessity, requirement |
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| respite | (noun) a pause from doing something (as work) | Synonyms: break, recess, time out |
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| (noun) the act of reprieving; postponing or remitting punishment | Synonyms: reprieve |
| (noun) an interruption in the intensity or amount of something | Synonyms: abatement, hiatus, reprieve, suspension |
| (noun) a (temporary) relief from harm or discomfort | Synonyms: reprieve |
| (noun) a pause for relaxation | Synonyms: relief, rest, rest period |
| rete | (noun) a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels | Synonyms: plexus |
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| reticulocyte | (noun) an immature red blood cell containing a network of filaments or granules | - |
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| rewrite | (noun) something that has been written again | Synonyms: rescript, revision |
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| rhodochrosite | (noun) a mineral consisting of manganese carbonate; a source of manganese | - |
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| rhodolite | (noun) a red or pink variety of garnet used as a gemstone | - |
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| rhodonite | (noun) a pink or red mineral consisting of crystalline manganese silicate; used as an ornamental stone | - |
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| rhyolite | (noun) very acid volcanic rock | - |
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| riposte | (noun) (fencing) a counterattack made immediately after successfully parrying the opponents lunge | - |
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| (noun) a quick reply to a question or remark (especially a witty or critical one) | Synonyms: comeback, counter, rejoinder, replication, retort, return |
| rite | (noun) any customary observance or practice | Synonyms: ritual |
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| (noun) an established ceremony prescribed by a religion | Synonyms: religious rite |
| roomette | (noun) a small private compartment for one on a sleeping car | - |
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| roommate | (noun) an associate who shares a room with you | Synonyms: roomie, roomy |
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| roquette | (noun) erect European annual often grown as a salad crop to be harvested when young and tender | Synonyms: arugula, Eruca sativa, Eruca vesicaria sativa, garden rocket, rocket, rocket salad |
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| rosette | (noun) an ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honor | - |
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| (noun) circular window filled with tracery | Synonyms: rose window |
| (noun) a cluster of leaves growing in crowded circles from a common center or crown (usually at or close to the ground) | - |
| (noun) rhizoctinia disease of potatoes | Synonyms: little potato, russet scab, stem canker |
| rote | (noun) memorization by repetition | Synonyms: rote learning |
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| roulette | (noun) a gambling game in which players bet on which compartment of a revolving wheel a small ball will come to rest in | - |
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| (noun) a wheel with teeth for making a row of perforations | Synonyms: toothed wheel |
| (noun) a line generated by a point on one figure rolling around a second figure | Synonyms: line roulette |
| route | (noun) an open way (generally public) for travel or transportation | Synonyms: road |
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| (noun) an established line of travel or access | Synonyms: itinerary, path |
| salicylate | (noun) a salt of salicylic acid (included in several commonly used drugs) | - |
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| salute | (noun) an act of honor or courteous recognition | Synonyms: salutation |
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| (noun) a formal military gesture of respect | Synonyms: military greeting |
| (noun) an act of greeting with friendly words and gestures like bowing or lifting the hat | - |
| samarskite | (noun) a complex black mineral occurring in pegmatites | - |
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| samite | (noun) a heavy silk fabric (often woven with silver or gold threads); used to make clothing in the Middle Ages | - |
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| sapote | (noun) brown oval fruit flesh makes excellent sherbet | Synonyms: mammee, marmalade plum |
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| (noun) tropical American tree having wood like mahogany and sweet edible egg-shaped fruit; in some classifications placed in the genus Calocarpum | Synonyms: Calocarpum zapota, mammee, marmalade tree, Pouteria zapota |
| saprolite | (noun) a deposit of clay and disintegrating rock that is found in its original place | - |
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| saprophyte | (noun) an organism that feeds on dead organic matter especially a fungus or bacterium | Synonyms: saprophytic organism |
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| satellite | (noun) man-made equipment that orbits around the earth or the moon | Synonyms: artificial satellite, orbiter |
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| (noun) any celestial body orbiting around a planet or star | - |
| (noun) a person who follows or serves another | Synonyms: planet |
| satinette | (noun) a fabric with a finish resembling satin but made partly or wholly from cotton or synthetic fiber | Synonyms: satinet |
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| saute | (noun) a dish of sauteed food | - |
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| scheelite | (noun) a mineral used as an ore of tungsten | - |
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| schoolmate | (noun) an acquaintance that you go to school with | Synonyms: class fellow, classmate, schoolfellow |
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| sclerite | (noun) hard plate or element of the exoskeleton of some arthropods | - |
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| scute | (noun) large bony or horny plate as on an armadillo or turtle or the underside of a snake | - |
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| secretariate | (noun) an administrative unit responsible for maintaining records and other secretarial duties; especially for international organizations | Synonyms: secretariat |
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| segregate | (noun) someone who is or has been segregated | - |
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| selenite | (noun) a compound that contains a SeO32− anion. | - |
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| semiepiphyte | (noun) a plant that is an epiphyte for part of its life | Synonyms: hemiepiphyte |
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| semiparasite | (noun) a parasitic plant that contains some chlorophyll and therefore is capable of photosynthesis | Synonyms: hemiparasite |
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| senate | (noun) assembly possessing high legislative powers | - |
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| sente | (noun) 100 lisente equal 1 loti in Lesotho; one sente is worth one-hundredth of a loti | - |
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| separate | (noun) a garment that can be purchased separately and worn in combinations with other garments | - |
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| (noun) a separately printed article that originally appeared in a larger publication | Synonyms: offprint, reprint |
| sepiolite | (noun) a white clayey mineral | Synonyms: meerschaum |
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| septette | (noun) a musical composition written for seven performers | Synonyms: septet |
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| (noun) seven people considered as a unit | Synonyms: septet, sevensome |
| (noun) a set of seven similar things considered as a unit | Synonyms: septet |
| (noun) seven performers or singers who perform together | Synonyms: septet |
| serviette | (noun) a small piece of table linen that is used to wipe the mouth and to cover the lap in order to protect clothing | Synonyms: napkin, table napkin |
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| sextette | (noun) a musical composition written for six performers | Synonyms: sestet, sextet |
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| (noun) six people considered as a unit | Synonyms: sextet, sixsome |
| (noun) a set of six similar things considered as a unit | Synonyms: sestet, sextet |
| (noun) six performers or singers who perform together | Synonyms: sestet, sextet |
| sheepcote | (noun) a pen for sheep | Synonyms: fold, sheep pen, sheepfold |
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| shipmate | (noun) an associate on the same ship with you | - |
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| shite | (noun) obscene terms for feces | Synonyms: crap, dirt, poop, shit, turd |
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| shogunate | (noun) a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.) | Synonyms: absolutism, authoritarianism, Caesarism, despotism, dictatorship, monocracy, one-man rule, Stalinism, totalitarianism, tyranny |
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| shote | (noun) a young pig | Synonyms: piggy, piglet, shoat |
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| siderite | (noun) a meteorite consisting principally of nickel and iron | - |
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| (noun) iron ore in the form of ferrous carbonate | Synonyms: chalybite |
| siderocyte | (noun) an abnormal red blood cell containing granules of iron not bound in hemoglobin | - |
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| silhouette | (noun) a drawing of the outline of an object; filled in with some uniform color | - |
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| (noun) an outline of a solid object (as cast by its shadow) | - |
| silicate | (noun) a salt or ester derived from silicic acid | - |
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| site | (noun) a computer connected to the internet that maintains a series of web pages on the World Wide Web; a computer connected to the internet that maintains a series of web pages on the World Wide Web | Synonyms: internet site, web site, website |
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| (noun) the piece of land on which something is located (or is to be located) | Synonyms: land site |
| (noun) physical position in relation to the surroundings | Synonyms: situation |
| skate | (noun) large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins | - |
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| (noun) sports equipment that is worn on the feet to enable the wearer to glide along and to be propelled by the alternate actions of the legs | - |
| slate | (noun) (formerly) a writing tablet made of slate | - |
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| (noun) a list of candidates nominated by a political party to run for election to public offices | Synonyms: ticket |
| (noun) a fine-grained metamorphic rock that can be split into thin layers | - |
| (noun) thin layers of rock used for roofing | Synonyms: slating |
| sluicegate | (noun) regulator consisting of a valve or gate that controls the rate of water flow through a sluice | Synonyms: floodgate, head gate, penstock, sluice valve, water gate |
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| smaltite | (noun) a grey mineral consisting of cobalt arsenide and nickel; an important source of cobalt and nickel | - |
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| smithsonite | (noun) a mineral ore of zinc. | Synonyms: zinc spar |
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| snakebite | (noun) a bite inflicted by a (venomous) snake | - |
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| socialite | (noun) a socially prominent person | - |
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| sodalite | (noun) a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks | - |
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| sodomite | (noun) someone who engages in anal copulation (especially a male who engages in anal copulation with another male) | Synonyms: bugger, sod, sodomist |
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| solute | (noun) the dissolved matter in a solution; the component of a solution that changes its state | - |
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| solvate | (noun) a compound formed by solvation (the combination of solvent molecules with molecules or ions of the solute) | - |
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| somite | (noun) one of a series of similar body segments into which some animals are divided longitudinally | Synonyms: metamere |
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| sophisticate | (noun) a worldly-wise person | Synonyms: man of the world |
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