| amphisbaena | (noun) (classical mythology) a serpent with a head at each end of its body | - |
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| anamorphism | (noun) a distorted projection or perspective; especially an image distorted in such a way that it becomes visible only when viewed in a special manner | Synonyms: anamorphosis |
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| (noun) metamorphism that occurs deep under the earth's surface; changes simple minerals into complex minerals | - |
| (noun) the evolution of one type of organism from another by a long series of gradual changes | Synonyms: anamorphosis |
| anarchism | (noun) a political theory favoring the abolition of governments | - |
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| anarchist | (noun) an advocate of anarchism | Synonyms: nihilist, syndicalist |
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| anorchism | (noun) absence of one of both testes | Synonyms: anorchia, anorchidism |
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| anthropomorphism | (noun) the representation of objects (especially a god) as having human form or traits | Synonyms: theanthropism |
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| anthropopathism | (noun) Attribution of human feelings to things not human, such as inanimate objects, animals, or natural phenomena. | - |
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| antihistamine | (noun) a medicine used to treat allergies and hypersensitive reactions and colds; works by counteracting the effects of histamine on a receptor site | - |
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| architeuthis | (noun) largest mollusk known about but never seen (to 60 feet long) | Synonyms: giant squid |
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| bakshis | (noun) a relatively small amount of money given for services rendered (as by a waiter) | Synonyms: backsheesh, baksheesh, bakshish, gratuity, pourboire, tip |
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| bakshish | (noun) a relatively small amount of money given for services rendered (as by a waiter) | Synonyms: backsheesh, baksheesh, bakshis, gratuity, pourboire, tip |
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| biographism | (noun) reduction of textual meaning to authorial biography. | - |
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| brachistochrone | (noun) a curve between two points along which a body can move under gravity in a shorter time than for any other curve. | - |
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| calligraphist | (noun) someone skilled in penmanship | Synonyms: calligrapher |
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| catechism | (noun) an elementary book summarizing the principles of a Christian religion; written as questions and answers | - |
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| (noun) a series of questions put to an individual (such as a political candidate) to elicit their views | - |
| catechist | (noun) one who instructs catechumens in preparation for baptism (especially one using a catechism) | - |
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| cheiloschisis | (noun) a congenital cleft in the middle of the upper lip | Synonyms: cleft lip, harelip |
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| chisel | (noun) an edge tool with a flat steel blade with a cutting edge | - |
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| chiseler | (noun) a person who swindles you by means of deception or fraud | Synonyms: chiseller, defrauder, gouger, grifter, scammer, swindler |
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| chiseller | (noun) a person who swindles you by means of deception or fraud | Synonyms: chiseler, defrauder, gouger, grifter, scammer, swindler |
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| cosmographist | (noun) a scientist knowledgeable about cosmography | Synonyms: cosmographer |
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| cryptorchism | (noun) failure of one or both testes to move into the scrotum as the male fetus develops | Synonyms: cryptorchidism, cryptorchidy |
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| dehiscence | (noun) (biology) release of material by splitting open of an organ or tissue; the natural bursting open at maturity of a fruit or other reproductive body to release seeds or spores or the bursting open of a surgically closed wound | - |
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| deipnosophist | (noun) someone skilled at informal chitchat | - |
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| demographist | (noun) a scientist who studies the growth and density of populations and their vital statistics | Synonyms: demographer, population scientist |
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| diastrophism | (noun) the process of deformation that produces continents and ocean basins in the earth's crust | - |
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| dimorphism | (noun) (biology) the existence of two forms of individual within the same animal species (independent of sex differences) | - |
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| (noun) (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms | - |
| disenfranchisement | (noun) the act of withdrawing certification or terminating a franchise | - |
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| disfranchisement | (noun) the discontinuation of a franchise; especially the discontinuation of the right to vote | - |
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| eggwhisk | (noun) a mixer for beating eggs or whipping cream | Synonyms: eggbeater |
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| enantiomorphism | (noun) the relation of opposition between crystals or molecules that are reflections of one another | Synonyms: mirror-image relation |
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| enfranchisement | (noun) the act of certifying or bestowing a franchise on | Synonyms: certification |
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| (noun) a statutory right or privilege granted to a person or group by a government (especially the rights of citizenship and the right to vote) | Synonyms: franchise |
| (noun) freedom from political subjugation or servitude | - |
| erethism | (noun) an abnormally high degree of irritability or sensitivity to stimulation of an organ or body part | - |
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| fetichism | (noun) sexual arousal or gratification resulting from handling a fetish (or a specific part of the body other than the sexual organs) | Synonyms: fetishism |
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| (noun) a belief in the magical power of fetishes (or the worship of a fetish) | Synonyms: fetishism |
| fetishism | (noun) sexual arousal or gratification resulting from handling a fetish (or a specific part of the body other than the sexual organs) | Synonyms: fetichism |
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| (noun) a belief in the magical power of fetishes (or the worship of a fetish) | Synonyms: fetichism |
| fetishist | (noun) one who engages in fetishism (especially of a sexual nature) | - |
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| franchise | (noun) a statutory right or privilege granted to a person or group by a government (especially the rights of citizenship and the right to vote) | Synonyms: enfranchisement |
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| (noun) an authorization to sell a company's goods or services in a particular place | - |
| (noun) a business established or operated under an authorization to sell or distribute a company's goods or services in a particular area | Synonyms: dealership |
| gymnosophist | (noun) member of a Hindu sect practicing gymnosophy (especially nudism) | - |
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| haematohiston | (noun) a colorless protein obtained by removing heme from hemoglobin; the oxygen carrying compound in red blood cells | Synonyms: globin, hematohiston |
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| hagiographist | (noun) the author of a worshipful or idealizing biography | Synonyms: hagiographer, hagiologist |
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| haschisch | (noun) purified resinous extract of the hemp plant; used as a hallucinogen | Synonyms: hash, hasheesh, hashish |
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| hashish | (noun) purified resinous extract of the hemp plant; used as a hallucinogen | Synonyms: haschisch, hash, hasheesh |
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| hematohiston | (noun) a colorless protein obtained by removing heme from hemoglobin; the oxygen carrying compound in red blood cells | Synonyms: globin, haematohiston |
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| hierarchisation | (noun) The act or result of hierarchizing; the establishment of a hierarchy. | Synonyms: hierarchization |
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| hiss | (noun) a cry or noise made to express displeasure or contempt | Synonyms: bird, boo, Bronx cheer, hoot, raspberry, razz, razzing, snort |
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| (noun) a fricative sound (especially as an expression of disapproval) | Synonyms: fizzle, hissing, hushing, sibilation |
| hisser | (noun) someone who communicates disapproval by hissing | - |
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| hissing | (noun) a fricative sound (especially as an expression of disapproval) | Synonyms: fizzle, hiss, hushing, sibilation |
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| histaminase | (noun) enzyme that acts as a catalyst in converting histidine to histamine | - |
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| histamine | (noun) amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions | - |
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| histidine | (noun) an essential amino acid found in proteins that is important for the growth and repair of tissue | - |
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| histiocyte | (noun) a macrophage that is found in connective tissue | - |
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| histiocytosis | (noun) a blood disease characterized by an abnormal multiplication of macrophages | - |
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| histocompatibility | (noun) condition in which the cells of one tissue can survive in the presence of cells of another tissue | - |
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| histogram | (noun) a bar chart representing a frequency distribution; heights of the bars represent observed frequencies | - |
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| histoincompatibility | (noun) incompatibility in which one person's tissue cannot be transplanted to another person | - |
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| histologist | (noun) anatomist who specializes in the microscopic study of animal tissues | - |
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| histology | (noun) the branch of biology that studies the microscopic structure of animal or plant tissues | - |
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| histone | (noun) a simple protein containing mainly basic amino acids; present in cell nuclei in association with nucleic acids | - |
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| historian | (noun) a person who is an authority on history and who studies it and writes about it | Synonyms: historiographer |
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| historicalness | (noun) significance owing to its history | - |
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| (noun) the state of having in fact existed in the past | - |
| historicism | (noun) a theory that social and cultural events are determined by history | - |
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| historiographer | (noun) a person who is an authority on history and who studies it and writes about it | Synonyms: historian |
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| historiography | (noun) the writing of history | - |
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| (noun) a body of historical literature | - |
| history | (noun) the discipline that records and interprets past events involving human beings | - |
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| (noun) all that is remembered of the past as preserved in writing; a body of knowledge | - |
| (noun) a record or narrative description of past events | Synonyms: account, chronicle, story |
| (noun) the aggregate of past events | - |
| (noun) the continuum of events occurring in succession leading from the past to the present and even into the future | - |
| histrion | (noun) a theatrical performer | Synonyms: actor, player, role player, thespian |
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| histrionics | (noun) a performance of a play | Synonyms: representation, theatrical, theatrical performance |
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| (noun) a deliberate display of emotion for effect | - |
| homomorphism | (noun) similarity of form | Synonyms: homomorphy |
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| immunohistochemistry | (noun) an assay that shows specific antigens in tissues by the use of markers that are either fluorescent dyes or enzymes (such as horseradish peroxidase) | - |
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| isomorphism | (noun) (biology) similarity or identity of form or shape or structure | Synonyms: isomorphy |
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| katamorphism | (noun) metamorphism that occurs at or near the earth's surface; breaks down complex minerals into simpler ones | - |
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| logomachist | (noun) someone given to disputes over words | Synonyms: logomach |
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| machismo | (noun) exaggerated masculinity | - |
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| masochism | (noun) sexual pleasure obtained from receiving punishment (physical or psychological) | - |
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| masochist | (noun) someone who obtains pleasure from receiving punishment | - |
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| metamorphism | (noun) change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substances | - |
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| monarchism | (noun) a belief in and advocacy of monarchy as a political system | - |
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| monarchist | (noun) an advocate of the principles of monarchy | Synonyms: royalist |
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| monorchism | (noun) failure of one testes to descend into the scrotum | Synonyms: monorchidism |
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| orchis | (noun) one of the two male reproductive glands that produce spermatozoa and secrete androgens | Synonyms: ball, ballock, bollock, egg, nut, testicle, testis |
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| (noun) any of various deciduous terrestrial orchids having fleshy tubers and flowers in erect terminal racemes | - |
| ornithischian | (noun) herbivorous dinosaur with a pelvis like that of a bird | Synonyms: ornithischian dinosaur |
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| osteopathist | (noun) a therapist who manipulates the skeleton and muscles | Synonyms: osteopath |
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| pachisi | (noun) an ancient board game resembling backgammon; played on a cross-shaped board | Synonyms: parchesi, parchisi |
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| paleographist | (noun) an archeologist skilled in paleography | Synonyms: paleographer |
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| parchisi | (noun) an ancient board game resembling backgammon; played on a cross-shaped board | Synonyms: pachisi, parchesi |
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| pennywhistle | (noun) an inexpensive fipple flute | Synonyms: tin whistle, whistle |
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| philosophiser | (noun) someone who considers situations from a philosophical point of view | Synonyms: philosophizer |
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| phthisis | (noun) involving the lungs with progressive wasting of the body | Synonyms: consumption, pulmonary tuberculosis, wasting disease, white plague |
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| pleomorphism | (noun) (biology) the appearance of two or more distinctly different forms in the life cycle of some organisms | - |
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| (noun) (chemistry) the existence of different kinds of crystal of the same chemical compound | Synonyms: polymorphism |
| polymorphism | (noun) (biology) the existence of two or more forms of individuals within the same animal species (independent of sex differences) | - |
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| (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 | - |
| prehistory | (noun) the time during the development of human culture before the appearance of the written word | Synonyms: prehistoric culture |
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| prognathism | (noun) the condition of being prognathous; the condition of having a projecting jaw | - |
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| protohistory | (noun) the study of humans prior to the invention of writing | Synonyms: protoanthropology |
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| rachis | (noun) the series of vertebrae forming the axis of the skeleton and protecting the spinal cord | Synonyms: back, backbone, spinal column, spine, vertebral column |
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| (noun) axis of a compound leaf or compound inflorescence | - |
| rachischisis | (noun) a not uncommon congenital defect in which a vertebra is malformed; unless several vertebrae are affected or there is myelomeningocele there are few symptoms; can be diagnosed by amniocentesis | Synonyms: schistorrhachis, spina bifida |
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| sadomasochism | (noun) sadism and masochism combined in one person | - |
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| sadomasochist | (noun) someone who enjoys both sadism and masochism | - |
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| sapphism | (noun) female homosexuality | Synonyms: lesbianism |
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| schism | (noun) division of a group into opposing factions | Synonyms: split |
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| (noun) the formal separation of a church into two churches or the withdrawal of one group over doctrinal differences | - |
| schist | (noun) any metamorphic rock that can be split into thin layers | - |
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| schistorrhachis | (noun) a not uncommon congenital defect in which a vertebra is malformed; unless several vertebrae are affected or there is myelomeningocele there are few symptoms; can be diagnosed by amniocentesis | Synonyms: rachischisis, spina bifida |
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