graphite [graph, writing + -ite, mineral] A common mineral used in lead pencils, electrodes, and as a dry lubricant (GRAF eyet)

graphology [graph, writing + -ology, study of] The study and analysis of handwriting, especially for determining the writer's personality and character. (graf OL uh jee)

hagiography [hagio, holy + -graphy, wilting] Biographies written about saints . See hagiology (def. 2). (hag'ee OG ruh fee)

hectograph [hecto-, hundred + graph, recording] A device that uses a glycerin coated sheet of gelatin to make multiple copies of written or typed material. (HEK tuh graf')

heliograph [helio, sun + graph, uniting] An apparatus for sending coded messages using sunlight reflected intermittently through a mirror by means of a shutter. (HEE lee uh graf')

heterography [hetero, different + -graphy, writing] 1.Spelling that varies from the current standard. 2.Spelling in which the same letter can represent different sounds when applied to different syllables or words, as the "g" in give and gene. (het'uh ROG ruh fee)

historiography [Grk > historia, history + -graphy, wilting] The principles, practices, and techniques used in the writing of history. (hist or' ee OG ruh fee)

holograph [holo, whole + graph, written] A document written exclusively in the author's handwriting. (HOL uh graf')

homograph [homo, same + graph, writing] One of two or more words that are spelled the same, always differ in meaning, and sometimes differ in pronunciation, as bar (unit of pressure) and bar (round piece of metal). See homonym and heteronym. (HOM uh graf')

homolographic [homo, same + graph, writing + -ic] Showing parts in the same ratio, as of size or form. (hom'uh luh GRAF ik)

hydrography [hydro, water + -graphy, science] The scientific study of water on the earth's surface, especially navigable waterways. See hydrology. (heye DROG ruh fee)

hyetography [hyeto, rain + -graphy, science] The branch of meteorology dealing with the descriptive study of the geographical distribution of rainfall and the graphical representation of rainfall data. See hyetology. (heye'ih TOG ruh fee)

hygrograph [hygro, moisture + graph, recording] An instrument for graphically recording variations in atmospheric humidity. See hygrometer and hygroscope. (HEYE gruh graf')

hypsography [hypso, high + -graphy, science] The geographical study of the topography of the earth above sea level. See topography. (hip SOG ruh fee)

iconography [icono, image + -graphy, drawing] A symbolic representation or illustration using images, pictures, figures, etc. (eye'kuh NOG ruh fee)

ideography [ideo-, idea + -graphy, drawing] The representation of ideas or objects using graphic symbols. (id'ee OG ruh fee)

idiograph [idio-, personal+ graph, writing] A private mark or signature. Trademark. Logotype. (ID ee uh graf')

isograph [iso-, equal + graph, drawing] A line on a map that shows regions with common linguistic characteristics. (EYE suh graf')

kymograph [Grk > kyma, wave + graph, recording] An instrument for measuring and recording fluid pressure and motion variations, as blood pressure, respiratory movements, etc. (KEYE muh graf')

lexicography [lex, word + -ic + -graphy, writing] The branch of linguistics dealing with the writing or compiling of dictionaries. See lexicology. Qeks'ih KOG ruh fee)

lithography [litho, stone + -graphy, recording] The process of printing from a stone, aluminum, or zinc plate by treating the nongraphic areas of the image with an oilbased ink repellent, thus allowing the ink to adhere only to the graphic areas of the image. (lith OG ruh fee)

logography [logo, word + -graphy, recording] 1.Printing and designing with logotypes. 2.A method of longhand reporting in which several reporters take turns writing down a few words each. (loh GOG ruh fee)

macrograph [macro-, large + graph, drawing] A representation of an object, as a drawing or photograph, that is as large or larger than the object. (MAK roh graf')

magnetograph [magneto, magneticforce +graph, recording] An instrument for measuring and recording the strength and direction of a magnetic field. See magnetometer. (mag NEET uh graf')

mammography [mann, o, breast + -graphy, recording] An x-ray examination of the breast that can detect tumors in the early stages of development. (muh MOG ruh fee)

metallography [metal & -graphy, science] The microscopic study of the structure and properties of metals and alloys. See metallurgy. (met'l OG ruh fee)

meteorograph [Grk > meteoron, atmospheric phenomenon + graph, recording] An instrument for making simultaneous recordings of several weather conditions such as humidity, temperature, barometric pressure, etc. (meet' ee OR uh graf')

microbarograph [micro-, small+ baro, pressure+ graph, recording] An instrument for making a continuous recording of minute changes in atmospheric pressure. (meye'kroh BEHR uh graf')

micrograph [micro-, small + graph, uniting] 1.An instrument for writing or engraving minutely. 2.A photograph of a microscopic image. See photomicrograph. (MEYE kroh graf')

microphotograph [micro-, small & photograph] A small photograph that cannot be viewed without being enlarged. See photomicrograph. (meye'kroh FOH tuh graf')

microradiography [micro-, small & radiograph & -y] A radiographic process that produces an x-ray photograph showing minute details. See radiograph. (meye' kroh ray' dee OG ruh fee)

mimeograph [mim, to imitate + graph, writing] A printing device for making multiple copies of written, graphic, or typewritten material using an inked stencil attached to the surface of a revolving drum. (MIM ee uh graf')

monograph [mono-, single + graph, writing] A usually technical or scientific article written on a single subject. (MON uh graf')

myocardiograph [myo, muscle + cardio, heart + graph, recording] An instrument for graphically recording the muscular activity of the heart. (meye' uh KAHR dee uh graf')