| polymorphism | (noun) (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences) | - |
|---|
| (noun) (chemistry) the existence of different kinds of crystal of the same chemical compound | Synonyms: pleomorphism |
| (noun) (genetics) the genetic variation within a population that natural selection can operate on | - |
| polymyositis | (noun) myositis characterized by weakness of limb and neck muscles and much muscle pain and swelling; progression and severity vary among individuals | - |
|---|
| polymyxin | (noun) any of several toxic antibiotics obtained from a particular soil bacterium | - |
|---|
| poultryman | (noun) a dealer in poultry and poultry products | Synonyms: poulterer |
|---|
| praseodymium | (noun) a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process | Synonyms: atomic number 59, Pr |
|---|
| prepayment | (noun) payment in advance | - |
|---|
| proenzyme | (noun) any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active | Synonyms: zymogen |
|---|
| progymnosperm | (noun) an ancestral fossil type from which modern gymnosperms are thought to have derived | - |
|---|
| pseudonym | (noun) a fictitious name used when the person performs a particular social role | Synonyms: anonym, nom de guerre |
|---|
| quarryman | (noun) a man who works in a quarry | Synonyms: quarrier |
|---|
| railwayman | (noun) an employee of a railroad | Synonyms: railroad man, railroader, railway man, trainman |
|---|
| redeployment | (noun) the withdrawal and redistribution of forces in an attempt to use them more effectively | Synonyms: redisposition |
|---|
| repayment | (noun) the act of returning money received previously | Synonyms: refund |
|---|
| (noun) payment of a debt or obligation | Synonyms: quittance |
| retronym | (noun) a word introduced because an existing term has become inadequate | - |
|---|
| rhinophyma | (noun) enlargement of the nose with dilation of follicles and redness and prominent vascularity of the skin; often associated with excessive consumption of alcohol | Synonyms: brandy nose, copper nose, hammer nose, hypertrophic rosacea, potato nose, rum-blossom, rum nose, toper's nose |
|---|
| rhyme | (noun) correspondence in the sounds of two or more lines (especially final sounds) | Synonyms: rime |
|---|
| (noun) a piece of poetry | Synonyms: verse |
| rhymer | (noun) a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) | Synonyms: poetiser, poetizer, rhymester, versifier |
|---|
| rhymester | (noun) a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets) | Synonyms: poetiser, poetizer, rhymer, versifier |
|---|
| schizothymia | (noun) resembling schizophrenia but remaining within the bounds of normality | - |
|---|
| shaggymane | (noun) common edible mushroom having an elongated shaggy white cap and black spores | Synonyms: Coprinus comatus, shaggy cap, shaggymane mushroom |
|---|
| soymilk | (noun) a milk substitute containing soybean flour and water; used in some infant formulas and in making tofu | Synonyms: soya milk, soybean milk |
|---|
| spymaster | (noun) someone who directs clandestine intelligence activities | - |
|---|
| stymie | (noun) a thwarting and distressing situation | Synonyms: stymy |
|---|
| (noun) a situation in golf where an opponent's ball blocks the line between your ball and the hole | Synonyms: stymy |
| stymy | (noun) a thwarting and distressing situation | Synonyms: stymie |
|---|
| (noun) a situation in golf where an opponent's ball blocks the line between your ball and the hole | Synonyms: stymie |
| supersymmetry | (noun) (physics) a theory that tries to link the four fundamental forces | - |
|---|
| symbiosis | (noun) the relation between two different species of organisms that are interdependent; each gains benefits from the other | Synonyms: mutualism |
|---|
| symbol | (noun) something visible that by association or convention represents something else that is invisible | Synonyms: symbolic representation, symbolisation, symbolization |
|---|
| (noun) an arbitrary sign (written or printed) that has acquired a conventional significance | - |
| symbolatry | (noun) the worship of symbols | Synonyms: symbol-worship, symbololatry |
|---|
| symbolisation | (noun) the practice of investing things with symbolic meaning | Synonyms: symbolism, symbolization |
|---|
| (noun) something visible that by association or convention represents something else that is invisible | Synonyms: symbol, symbolic representation, symbolization |
| (noun) the use of symbols to convey meaning | Synonyms: symbolization |
| symboliser | (noun) someone skilled in the interpretation or representation of symbols | Synonyms: symbolist, symbolizer |
|---|
| symbolising | (noun) the act of representing something with a symbol | Synonyms: symbolizing |
|---|
| symbolism | (noun) the practice of investing things with symbolic meaning | Synonyms: symbolisation, symbolization |
|---|
| (noun) a system of symbols and symbolic representations | - |
| (noun) an artistic movement in the late 19th century that tried to express abstract or mystical ideas through the symbolic use of images | - |
| symbolist | (noun) a member of an artistic movement that expressed ideas indirectly via symbols | - |
|---|
| (noun) someone skilled in the interpretation or representation of symbols | Synonyms: symboliser, symbolizer |
| symbolization | (noun) the practice of investing things with symbolic meaning | Synonyms: symbolisation, symbolism |
|---|
| (noun) something visible that by association or convention represents something else that is invisible | Synonyms: symbol, symbolic representation, symbolisation |
| (noun) the use of symbols to convey meaning | Synonyms: symbolisation |
| symbolizer | (noun) someone skilled in the interpretation or representation of symbols | Synonyms: symboliser, symbolist |
|---|
| symbolizing | (noun) the act of representing something with a symbol | Synonyms: symbolising |
|---|
| symbology | (noun) the study or the use of symbols and symbolism | - |
|---|
| symbololatry | (noun) the worship of symbols | Synonyms: symbol-worship, symbolatry |
|---|
| symmachy | (noun) Fighting together or in an alliance with an ally (or allies) | - |
|---|
| symmetricalness | (noun) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane | Synonyms: balance, correspondence, symmetry |
|---|
| symmetry | (noun) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane | Synonyms: balance, correspondence, symmetricalness |
|---|
| (noun) (physics) the property of being isotropic; having the same value when measured in different directions | Synonyms: isotropy |
| (noun) balance among the parts of something | Synonyms: proportion |
| sympathectomy | (noun) surgical interruption of a nerve pathway in the sympathetic nervous system | - |
|---|
| sympathiser | (noun) someone who shares your feelings or opinions and hopes that you will be successful | Synonyms: sympathizer, well-wisher |
|---|
| (noun) a person who commiserates with someone who has had misfortune | Synonyms: comforter, sympathizer |
| sympathizer | (noun) someone who shares your feelings or opinions and hopes that you will be successful | Synonyms: sympathiser, well-wisher |
|---|
| (noun) a person who commiserates with someone who has had misfortune | Synonyms: comforter, sympathiser |
| sympathy | (noun) an inclination to support or be loyal to or to agree with an opinion | Synonyms: understanding |
|---|
| (noun) sharing the feelings of others (especially feelings of sorrow or anguish) | Synonyms: fellow feeling |
| (noun) a relation of affinity or harmony between people; whatever affects one correspondingly affects the other | - |
| sympatry | (noun) the occurrence of organisms in overlapping geographical areas, but without interbreeding | - |
|---|
| symphilid | (noun) minute arthropod often infesting the underground parts of truck-garden and greenhouse crops | Synonyms: garden centipede, garden symphilid, Scutigerella immaculata |
|---|
| symphonist | (noun) a composer of symphonies | - |
|---|
| symphony | (noun) a long and complex sonata for symphony orchestra | Synonyms: symphonic music |
|---|
| (noun) a large orchestra; can perform symphonies | Synonyms: philharmonic, symphony orchestra |
| symphysion | (noun) the most forward point of the alveolar process of the mandible | - |
|---|
| symphysis | (noun) a growing together of parts or structures | - |
|---|
| (noun) an abnormal adhesion of two or more structures | - |
| symploce | (noun) repetition of a word or phrase at the beginning and another at the end of successive clauses, i.e., simultaneous use of anaphora and epistrophe | - |
|---|
| symposiarch | (noun) the person who proposes toasts and introduces speakers at a banquet | Synonyms: toastmaster |
|---|
| symposiast | (noun) someone who participates in a symposium | - |
|---|
| symposium | (noun) a meeting or conference for the public discussion of some topic especially one in which the participants form an audience and make presentations | - |
|---|
| symptom | (noun) anything that accompanies X and is regarded as an indication of X's existence | - |
|---|
| (noun) (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease | - |
| synonym | (noun) two words that can be interchanged in a context are said to be synonymous relative to that context | Synonyms: equivalent word |
|---|
| synonymist | (noun) a student of synonyms | - |
|---|
| synonymity | (noun) the semantic relation that holds between two words that can (in a given context) express the same meaning | Synonyms: synonymousness, synonymy |
|---|
| synonymousness | (noun) the semantic relation that holds between two words that can (in a given context) express the same meaning | Synonyms: synonymity, synonymy |
|---|
| synonymy | (noun) the semantic relation that holds between two words that can (in a given context) express the same meaning | Synonyms: synonymity, synonymousness |
|---|
| tachymeter | (noun) a theodolite designed for rapid measurements | Synonyms: tacheometer |
|---|
| tallyman | (noun) one who keeps a tally of quantity or weight of goods produced or shipped or received | Synonyms: tally clerk |
|---|
| (noun) one who sells goods on the installment plan | - |
| tetrahymena | (noun) relative of the paramecium; often used in genetics research | - |
|---|
| thyme | (noun) leaves can be used as seasoning for almost any meat and stews and stuffings and vegetables | - |
|---|
| (noun) any of various mints of the genus Thymus | - |
| thymidine | (noun) a nucleoside component of DNA; composed of thymine and deoxyribose | Synonyms: deoxythymidine |
|---|
| thymine | (noun) a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine | Synonyms: T |
|---|
| thymol | (noun) a colorless crystalline solid used in perfume or preserving biological specimens or in embalming or medically as a fungicide or antiseptic | Synonyms: thyme camphor, thymic acid |
|---|
| thymosin | (noun) hormone secreted by the thymus; stimulates immunological activity of lymphoid tissue | - |
|---|
| thymus | (noun) a ductless glandular organ at the base of the neck that produces lymphocytes and aids in producing immunity; atrophies with age | Synonyms: thymus gland |
|---|
| toponym | (noun) the name by which a geographical place is known | Synonyms: place name |
|---|
| toponymy | (noun) the branch of lexicology that studies the place names of a region or a language | Synonyms: toponomy |
|---|
| (noun) the nomenclature of regional anatomy | Synonyms: toponomy |
| tridymite | (noun) a mineral form of silica | - |
|---|
| troponym | (noun) a word that denotes a manner of doing something | Synonyms: manner name |
|---|
| troponymy | (noun) the place names of a region or a language considered collectively | Synonyms: troponomy |
|---|
| (noun) the semantic relation of being a manner of does something | - |
| tympan | (noun) a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end | Synonyms: drum, membranophone |
|---|
| tympani | (noun) a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it | Synonyms: kettle, kettledrum, timpani, tympanum |
|---|
| tympanist | (noun) a person who plays the kettledrums | Synonyms: timpanist |
|---|
| tympanites | (noun) distension of the abdomen that is caused by the accumulation of gas in the intestines or the peritoneal cavity | - |
|---|
| tympanitis | (noun) inflammation of the inner ear | - |
|---|
| tympanoplasty | (noun) surgical correction or repair of defects or injuries in the eardrum or the bones of the middle ear | - |
|---|
| tympanum | (noun) a large hemispherical brass or copper percussion instrument with a drumhead that can be tuned by adjusting the tension on it | Synonyms: kettle, kettledrum, timpani, tympani |
|---|
| (noun) the membrane in the ear that vibrates to sound | Synonyms: eardrum, myringa, tympanic membrane |
| (noun) the main cavity of the ear; between the eardrum and the inner ear | Synonyms: middle ear, tympanic cavity |
| underlayment | (noun) a pad placed under a carpet | Synonyms: carpet pad, rug pad, underlay |
|---|
| underpayment | (noun) the act of paying less than required | - |
|---|
| (noun) a payment smaller than needed or expected | - |
| unemployment | (noun) the state of being unemployed or not having a job | - |
|---|
| vestryman | (noun) a man who is a member of a church vestry | - |
|---|
| wrymouth | (noun) eellike Atlantic bottom fish with large almost vertical mouth | Synonyms: Cryptacanthodes maculatus, ghostfish |
|---|
| zymase | (noun) a complex of enzymes that cause glycolysis; originally found in yeast but also present in higher organisms | - |
|---|
| zymogen | (noun) any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active | Synonyms: proenzyme |
|---|
| zymology | (noun) the branch of chemistry concerned with fermentation (as in making wine or brewing or distilling) | Synonyms: zymurgy |
|---|
| zymolysis | (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: ferment, fermentation, fermenting, zymosis |
|---|
| zymosis | (noun) (medicine) the development and spread of an infectious disease (especially one caused by a fungus) | - |
|---|
| (noun) a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol | Synonyms: ferment, fermentation, fermenting, zymolysis |
| zymurgy | (noun) the branch of chemistry concerned with fermentation (as in making wine or brewing or distilling) | Synonyms: zymology |
|---|