| densitometer | (noun) a measuring instrument for determining optical or photographic density | - |
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| (noun) a measuring instrument for determining density or specific gravity | Synonyms: densimeter |
| densitometry | (noun) measuring the optical density of a substance by shining light on it and measuring its transmission | - |
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| dermatome | (noun) a surgical instrument used to cut very thin slices of skin | - |
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| diapheromera | (noun) a variety of stick insect | Synonyms: Diapheromera femorata |
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| dichloromethane | (noun) a nonflammable liquid used as a solvent and paint remover and refrigerant | Synonyms: methylene chloride |
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| dictyosome | (noun) a netlike structure in the cytoplasm of animal cells (especially in those cells that produce secretions) | Synonyms: Golgi apparatus, Golgi body, Golgi complex |
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| dome | (noun) a hemispherical roof | - |
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| (noun) a stadium that has a roof | Synonyms: covered stadium, domed stadium |
| (noun) informal terms for a human head | Synonyms: attic, bean, bonce, noggin, noodle |
| (noun) a concave shape whose distinguishing characteristic is that the concavity faces downward | - |
| domestic | (noun) a servant who is paid to perform menial tasks around the household | Synonyms: domestic help, house servant |
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| domestication | (noun) accommodation to domestic life | - |
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| (noun) the attribute of having been domesticated | Synonyms: tameness |
| (noun) adaptation to intimate association with human beings | - |
| domesticity | (noun) domestic activities or life | - |
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| (noun) the quality of being domestic or domesticated | - |
| doomed | (noun) people who are destined to die soon | Synonyms: lost |
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| drome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: aerodrome, airdrome, airport |
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| dromedary | (noun) one-humped camel of the hot deserts of northern Africa and southwestern Asia | Synonyms: Arabian camel, Camelus dromedarius |
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| durometer | (noun) An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like. | - |
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| dynamometer | (noun) measuring instrument designed to measure power | Synonyms: ergometer |
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| econometrician | (noun) an economist who uses statistical and mathematical methods | Synonyms: econometrist |
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| econometrics | (noun) the application of mathematics and statistics to the study of economic and financial data | - |
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| econometrist | (noun) an economist who uses statistical and mathematical methods | Synonyms: econometrician |
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| eightsome | (noun) a Scottish reel for eight dancers | - |
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| (noun) eight people considered as a unit | Synonyms: octet, octette |
| elastomer | (noun) any of various elastic materials that resemble rubber (resumes its original shape when a deforming force is removed) | - |
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| electrodynamometer | (noun) measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power | - |
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| electrometer | (noun) meter to measure electrostatic voltage differences; draws no current from the source | - |
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| enantiomer | (noun) either one of a pair of compounds (crystals or molecules) that are mirror images on each other but are not identical | Synonyms: enantiomorph |
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| encephalomeningitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: cerebromeningitis, meningoencephalitis |
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| endometriosis | (noun) the presence of endometrium elsewhere than in the lining of the uterus; causes premenstrual pain and dysmenorrhea | Synonyms: adenomyosis |
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| endometritis | (noun) inflammation of the lining of the uterus (of the endometrium) | Synonyms: metritis |
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| endometrium | (noun) (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition | - |
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| epiphenomenon | (noun) a secondary phenomenon that is a by-product of another phenomenon | - |
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| episome | (noun) DNA that is not incorporated into the genome but is replicated together with the genome (especially in bacterial cells) | - |
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| epitome | (noun) a standard or typical example | Synonyms: image, paradigm, prototype |
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| (noun) a brief abstract (as of an article or book) | - |
| ergometer | (noun) measuring instrument designed to measure power | Synonyms: dynamometer |
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| eriometer | (noun) An instrument for measuring the diameters of minute particles or fibers, from the size of the colored rings produced by the diffraction of the light in which the objects are viewed. | - |
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| eudiometer | (noun) measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases | - |
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| evaporometer | (noun) an instrument that measures rate of evaporation of water | Synonyms: atmometer |
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| fathometer | (noun) depth finder for determining depth of water or a submerged object by means of ultrasound waves | Synonyms: sonic depth finder |
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| femtometer | (noun) a metric unit of length equal to one quadrillionth of a meter | Synonyms: femtometre, fermi |
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| femtometre | (noun) a metric unit of length equal to one quadrillionth of a meter | Synonyms: femtometer, fermi |
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| fetometry | (noun) measurement of a fetus (especially the diameter of the head) | Synonyms: foetometry |
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| fivesome | (noun) five people considered as a unit | Synonyms: quintet, quintette |
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| (noun) the cardinal number that is the sum of four and one | Synonyms: 5, cinque, fin, five, Little Phoebe, pentad, Phoebe, quint, quintet, quintuplet, V |
| flavorsomeness | (noun) having an appetizing flavor | Synonyms: flavoursomeness, savoriness |
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| flavoursomeness | (noun) having an appetizing flavor | Synonyms: flavorsomeness, savoriness |
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| fluorochrome | (noun) any of various fluorescent substances used in fluorescence microscopy to stain specimens | - |
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| foetometry | (noun) measurement of a fetus (especially the diameter of the head) | Synonyms: fetometry |
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| fomentation | (noun) deliberate and intentional triggering (of trouble or discord) | Synonyms: instigation |
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| (noun) application of warm wet coverings to a part of the body to relieve pain and inflammation | - |
| (noun) a substance used as a warm moist medicinal compress or poultice | - |
| fomenter | (noun) one who agitates; a political troublemaker | Synonyms: agitator |
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| foursome | (noun) four people considered as a unit | Synonyms: quartet, quartette |
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| (noun) the cardinal number that is the sum of three and one | Synonyms: 4, four, IV, Little Joe, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad |
| frolicsomeness | (noun) lively high-spirited playfulness | Synonyms: friskiness, sportiveness |
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| fulsomeness | (noun) smug self-serving earnestness | Synonyms: oiliness, oleaginousness, smarminess, unction, unctuousness |
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| (noun) excessive but superficial compliments given with affected charm | Synonyms: smarm, unction |
| galvanometer | (noun) meter for detecting or comparing or measuring small electric currents | - |
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| gasometer | (noun) a large gas-tight spherical or cylindrical tank for holding gas to be used as fuel | Synonyms: gas holder |
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| (noun) a meter for measuring the amount of gas flowing through a particular pipe | Synonyms: gas meter |
| gastronome | (noun) a person devoted to refined sensuous enjoyment (especially good food and drink) | Synonyms: bon vivant, epicure, epicurean, foodie, gourmet |
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| genome | (noun) the ordering of genes in a haploid set of chromosomes of a particular organism; the full DNA sequence of an organism | - |
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| geometer | (noun) a mathematician specializing in geometry | Synonyms: geometrician |
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| geometrician | (noun) a mathematician specializing in geometry | Synonyms: geometer |
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| geometrid | (noun) slender-bodied broad-winged moth whose larvae are called measuring worms | Synonyms: geometrid moth |
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| geometry | (noun) the pure mathematics of points and lines and curves and surfaces | - |
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| gladsomeness | (noun) experiencing joy and pleasure | Synonyms: gladfulness, gladness |
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| glomerule | (noun) a compacted or sessile cyme | - |
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| glomerulonephritis | (noun) nephritis marked by inflammation of the glomeruli of the kidney; characterized by decreased production of urine and by the presence of blood and protein in the urine and by edema | - |
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| glomerulus | (noun) a small intertwined group of capillaries in the malpighian body; it filters the blood during urine formation | - |
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| gnathostome | (noun) a vertebrate animal possessing true jaws | - |
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| gnome | (noun) a short pithy saying expressing a general truth | - |
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| (noun) a legendary creature resembling a tiny old man; lives in the depths of the earth and guards buried treasure | Synonyms: dwarf |
| goniometer | (noun) direction finder that determines the angular direction of incoming radio signals | - |
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| gruesomeness | (noun) the quality of being ghastly | Synonyms: ghastliness, grimness, luridness |
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| haematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: hematocolpometra |
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| handsomeness | (noun) the quality of having regular well-defined features (especially of a man) | Synonyms: good looks |
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| hectometer | (noun) a metric unit of length equal to 100 meters | Synonyms: hectometre, hm |
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| hectometre | (noun) a metric unit of length equal to 100 meters | Synonyms: hectometer, hm |
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| heliometer | (noun) an instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope | - |
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| hematochrome | (noun) a reddish coloring material found in some algae | - |
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| hematocolpometra | (noun) accumulation of blood in the vagina and uterus | Synonyms: haematocolpometra |
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| hepatomegaly | (noun) abnormal enlargement of the liver | Synonyms: megalohepatia |
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| heterometabolism | (noun) development of insects with incomplete metamorphosis in which no pupal stage precedes maturity | Synonyms: heterometaboly |
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| heterometaboly | (noun) development of insects with incomplete metamorphosis in which no pupal stage precedes maturity | Synonyms: heterometabolism |
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| hippodrome | (noun) a stadium for horse shows or horse races | - |
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| hodometer | (noun) a meter that shows mileage traversed | Synonyms: mileometer, milometer, odometer |
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| holometabola | (noun) insects that undergo complete metamorphosis | Synonyms: metabola |
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| holometabolism | (noun) complete metamorphosis in insects | Synonyms: holometaboly |
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| holometaboly | (noun) complete metamorphosis in insects | Synonyms: holometabolism |
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| home | (noun) housing that someone is living in | Synonyms: abode, domicile, dwelling, dwelling house, habitation |
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| (noun) an institution where people are cared for | Synonyms: nursing home, rest home |
| (noun) (baseball) base consisting of a rubber slab where the batter stands; it must be touched by a base runner in order to score | Synonyms: home base, home plate, plate |
| (noun) a social unit living together | Synonyms: family, house, household, menage |
| (noun) the country or state or city where you live | - |
| (noun) place where something began and flourished | - |
| (noun) where you live at a particular time | Synonyms: place |
| (noun) the place where you are stationed and from which missions start and end | Synonyms: base |
| (noun) an environment offering affection and security | - |
| homebody | (noun) a person who seldom goes anywhere; one not given to wandering or travel | Synonyms: stay-at-home |
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| homebound | (noun) people who are confined to their homes | - |
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| homeboy | (noun) a male friend from your neighborhood or hometown | - |
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| (noun) a fellow male member of a youth gang | - |
| homebrew | (noun) an alcoholic beverage (especially beer) made at home | Synonyms: home brew |
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| homebuilder | (noun) someone who builds houses as a business | Synonyms: home-builder, house-builder, housebuilder |
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| homecoming | (noun) a coming to or returning home | Synonyms: return |
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| (noun) an annual school or university reunion for graduates | - |
| homefolk | (noun) the people of your home locality (especially your own family) | - |
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| homegirl | (noun) a fellow female member of a youth gang | - |
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| homeland | (noun) the country where you were born | Synonyms: country of origin, fatherland, mother country, motherland, native land |
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| homeless | (noun) poor people who unfortunately do not have a home to live in | - |
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| (noun) someone unfortunate without housing | Synonyms: homeless person |
| homelessness | (noun) the state or condition of having no home (especially the state of living in the streets) | - |
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| homeliness | (noun) an appearance that is not attractive or beautiful | Synonyms: plainness |
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| (noun) having a drab or dowdy quality; lacking stylishness or elegance | Synonyms: dowdiness, drabness |
| homemaker | (noun) a wife who manages a household while her husband earns the family income | Synonyms: housewife, lady of the house, woman of the house |
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| homemaking | (noun) the management of a household | - |
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| homeobox | (noun) one of various similar homeotic genes that are involved in bodily segmentation during embryonic development | Synonyms: homeobox gene |
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| homeopath | (noun) a practitioner of homeopathy | Synonyms: homoeopath |
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| homeopathy | (noun) a method of treating disease with small amounts of remedies that, in large amounts in healthy people, produce symptoms similar to those being treated | Synonyms: homoeopathy |
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| homeostasis | (noun) (physiology) metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes | - |
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| homeotherm | (noun) an animal that has a body temperature that is relatively constant and independent of the environmental temperature | Synonyms: homoiotherm, homotherm |
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| homeowner | (noun) someone who owns a home | Synonyms: householder |
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