| diaphoretic | (noun) used to produce perspiration | - |
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| diaphragm | (noun) a mechanical device in a camera that controls size of aperture of the lens | Synonyms: stop |
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| (noun) electro-acoustic transducer that vibrates to receive or produce sound waves | - |
| (noun) a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix | Synonyms: contraceptive diaphragm, pessary |
| (noun) (anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration | Synonyms: midriff |
| diaphysis | (noun) the main (mid) section of a long bone | Synonyms: shaft |
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| digraph | (noun) two successive letters (especially two letters used to represent a single sound: `sh' in `shoe') | Synonyms: digram |
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| discography | (noun) a descriptive catalog of musical recordings | - |
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| dysaphia | (noun) a disorder in the sense of touch | - |
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| dysgraphia | (noun) impaired ability to learn to write | - |
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| echocardiograph | (noun) a sonograph that creates an image of the heart and its abnormalities | - |
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| echocardiography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study to structure and motions of the heart | - |
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| echoencephalograph | (noun) a sonograph that creates an image of the brain and its abnormalities | - |
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| echoencephalography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study the anatomy of the brain | - |
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| echograph | (noun) An instrument used to record an echogram. | - |
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| echography | (noun) using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs | Synonyms: sonography, ultrasonography, ultrasound |
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| edaphosaurus | (noun) heavy-bodied reptile with a dorsal sail or crest; of the late Paleozoic | - |
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| elaphure | (noun) large Chinese deer surviving only in domesticated herds | Synonyms: Elaphurus davidianus, pere david's deer |
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| electrocardiograph | (noun) medical instrument that records electric currents associated with contractions of the heart | Synonyms: cardiograph |
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| electrocardiography | (noun) diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram) | Synonyms: cardiography |
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| electroencephalograph | (noun) medical instrument that records electric currents generated by the brain | - |
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| electrograph | (noun) electrical device used for etching by electrolytic means | - |
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| (noun) an apparatus for the electrical transmission of pictures | - |
| electromyograph | (noun) a medical instrument that records the electrical waves associated with the activity of skeletal muscles | - |
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| electromyography | (noun) diagnosis of neuromuscular disorders with the use of an electromyograph | - |
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| encephalograph | (noun) Any apparatus used to produce an encephalogram by recording electric currents generated by the brain. | - |
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| encephalography | (noun) roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram | - |
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| epanaphora | (noun) repetition of a word or phrase at the beginning of successive clauses | Synonyms: anaphora |
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| epigraph | (noun) an engraved inscription | - |
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| (noun) a quotation at the beginning of some piece of writing | - |
| epigraphy | (noun) the study of ancient inscriptions | - |
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| epitaph | (noun) an inscription on a tombstone or monument in memory of the person buried there | - |
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| (noun) a summary statement of commemoration for a dead person | - |
| ethnographer | (noun) an anthropologist who does ethnography | - |
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| ethnography | (noun) the branch of anthropology that provides scientific description of individual human societies | Synonyms: descriptive anthropology |
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| geographer | (noun) an expert on geography | - |
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| geographics | (noun) study of the earth's surface; includes people's responses to topography and climate and soil and vegetation | Synonyms: geography |
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| geography | (noun) study of the earth's surface; includes people's responses to topography and climate and soil and vegetation | Synonyms: geographics |
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| glyptography | (noun) carving or engraving (especially on stones) | - |
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| (noun) carvings or engravings (especially on precious stones) | Synonyms: glyptic art |
| graph | (noun) a visual representation of the relations between certain quantities, represented as points, plotted with reference to a set of axes | Synonyms: graphical record, graphical recording |
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| (noun) a visual display of information | Synonyms: chart |
| (noun) a written symbol that is used to represent speech | Synonyms: character, grapheme, graphic symbol |
| grapheme | (noun) a written symbol that is used to represent speech | Synonyms: character, graph, graphic symbol |
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| graphic | (noun) an image that is generated by a computer | Synonyms: computer graphic |
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| graphics | (noun) the drawings and photographs in the layout of a book | - |
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| (noun) photographs or other visual representations in a printed publication | Synonyms: art, artwork, nontextual matter |
| graphite | (noun) used as a lubricant and as a moderator in nuclear reactors | Synonyms: black lead, plumbago |
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| graphologist | (noun) a specialist in inferring character from handwriting | Synonyms: handwriting expert |
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| graphology | (noun) the study of handwriting (especially as an indicator of the writer's character or disposition) | - |
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| graphospasm | (noun) muscular spasms of thumb and forefinger while writing with a pen or pencil | Synonyms: writer's cramp |
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| hagiographer | (noun) the author of a worshipful or idealizing biography | Synonyms: hagiographist, hagiologist |
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| hagiographist | (noun) the author of a worshipful or idealizing biography | Synonyms: hagiographer, hagiologist |
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| hagiography | (noun) a biography that idealizes or idolizes the person (especially a person who is a saint) | - |
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| haphazardness | (noun) the quality of lacking any predictable order or plan | Synonyms: noise, randomness, stochasticity |
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| hectograph | (noun) duplicator consisting of a gelatin plate from which ink can be taken to make a copy | Synonyms: heliotype |
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| heliograph | (noun) an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on | - |
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| hermaphrodism | (noun) congenital condition in which external genitalia and internal sex organs have both male and female characteristics | Synonyms: hermaphroditism |
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| hermaphrodite | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: androgyne, epicene, epicene person, gynandromorph, intersex |
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| hermaphroditism | (noun) showing characteristics of both sexes | Synonyms: androgyny, bisexuality |
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| (noun) congenital condition in which external genitalia and internal sex organs have both male and female characteristics | Synonyms: hermaphrodism |
| hexakosioihexekontahexaphobia | (noun) fear of magic properties of the number 666 | - |
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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 | - |
| holograph | (noun) the intermediate photograph (or photographic record) that contains information for reproducing a three-dimensional image by holography | Synonyms: hologram |
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| (noun) handwritten book or document | Synonyms: manuscript |
| holography | (noun) the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image | - |
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| homograph | (noun) two words are homographs if they are spelled the same way but differ in meaning (e.g. fair) | - |
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| hydrography | (noun) the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation | - |
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| hymnography | (noun) (music) the craft of hymn composition. | - |
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| hypsography | (noun) measurement of the elevation of land above sea level | Synonyms: hypsometry |
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| (noun) the scientific study of the earth's configuration above sea level (emphasizing the measurement of land altitudes relative to sea level) | - |
| iconography | (noun) the images and symbolic representations that are traditionally associated with a person or a subject | - |
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| ideograph | (noun) a graphic character that indicates the meaning of a thing without indicating the sounds used to say it | Synonyms: ideogram |
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| ideography | (noun) the use of ideograms in writing | - |
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| kaph | (noun) the 11th letter of the Hebrew alphabet | - |
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| kymograph | (noun) scientific instrument consisting of a rotating drum holding paper on which a stylus traces a continuous record (as of breathing or blood pressure) | Synonyms: cymograph |
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| lexicographer | (noun) a compiler or writer of a dictionary; a student of the lexical component of language | Synonyms: lexicologist |
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| lexicography | (noun) the act of writing dictionaries | - |
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| lithograph | (noun) duplicator that prints by lithography; a flat surface (of stone or metal) is treated to absorb or repel ink in the desired pattern | Synonyms: lithograph machine |
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| (noun) a print produced by lithography | - |
| lithographer | (noun) a printmaker who uses lithography | - |
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| lithography | (noun) the act of making a lithographic print | - |
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| (noun) a method of planographic printing from a metal or stone surface | - |
| logagraphia | (noun) a loss of the ability to write or to express thoughts in writing because of a brain lesion | Synonyms: agraphia, anorthography |
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| logograph | (noun) a single written symbol that represents an entire word or phrase without indicating its pronunciation | Synonyms: logogram |
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| lymphangiography | (noun) roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram | Synonyms: lymphography |
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| lymphography | (noun) roentgenographic examination of lymph nodes and lymph vessels after injection of a radiopaque contrast medium; produces a lymphangiogram | Synonyms: lymphangiography |
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| magnetograph | (noun) a scientific instrument that registers magnetic variations (especially variations of the earth's magnetic field) | - |
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| mammography | (noun) a diagnostic procedure to detect breast tumors by the use of X rays | - |
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| mammothermography | (noun) the use of thermography to detect breast tumors (which appear as hot spots) | - |
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| megaphone | (noun) a cone-shaped acoustic device held to the mouth to intensify and direct the human voice | - |
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| metaphase | (noun) the second stage of mitosis | - |
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| (noun) the second stage of meiosis | - |
| metaphor | (noun) a figure of speech in which an expression is used to refer to something that it does not literally denote in order to suggest a similarity | - |
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| metaphysics | (noun) the philosophical study of being and knowing | - |
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| metaphysis | (noun) the growing part of a long bone between the diaphysis and the epiphysis | - |
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| micrograph | (noun) a graphic reproduction (as a photograph) of the image of an object formed by a microscope. | - |
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| mimeograph | (noun) a rotary duplicator that uses a stencil through which ink is pressed (trade mark Roneo) | Synonyms: mimeo, mimeograph machine, Roneo, Roneograph |
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| monograph | (noun) a detailed and documented treatise on a particular subject | - |
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| myelography | (noun) roentgenography of the spinal cord to detect possible lesions (usually after injection of a contrast medium into the subarachnoid space) | - |
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| naphazoline | (noun) vasoconstrictor (trade names Privine and Sudafed) used in nasal sprays to treat symptoms of nasal congestion and in eyedrops to treat eye irritation | Synonyms: Privine, Sudafed |
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| naphtha | (noun) any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents | - |
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| naphthalene | (noun) a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs | - |
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| naphthol | (noun) either of two phenols derived from naphthalene | - |
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| naphthoquinone | (noun) a fat-soluble vitamin that helps in the clotting of blood | Synonyms: antihemorrhagic factor, vitamin K |
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| nomograph | (noun) a graphic representation of numerical relations | Synonyms: nomogram |
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| oceanographer | (noun) a scientist who studies physical and biological aspects of the seas | - |
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| oceanography | (noun) the branch of science dealing with physical and biological aspects of the oceans | Synonyms: oceanology |
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| oleography | (noun) the art or process of producing chromolithographs printed on cloth to imitate an oil painting. | - |
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| orograph | (noun) A machine for use in making topographical maps. | - |
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| orography | (noun) the science of mountains | Synonyms: orology |
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| orthography | (noun) a method of representing the sounds of a language by written or printed symbols | Synonyms: writing system |
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| oscillograph | (noun) a device for making a record of the wave forms of fluctuating voltages or currents | - |
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| palaeoethnography | (noun) the ethnography of paleolithic humans | Synonyms: paleoethnography |
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| palaeogeography | (noun) the study of the geography of ancient times or ancient epochs | Synonyms: paleogeography |
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