| diode | (noun) a semiconductor that consists of a p-n junction | Synonyms: crystal rectifier, junction rectifier, semiconductor diode |
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| (noun) a thermionic tube having two electrodes; used as a rectifier | Synonyms: rectifying tube, rectifying valve |
| dioxide | (noun) an oxide containing two atoms of oxygen in the molecule | - |
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| disaccharide | (noun) any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis | - |
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| disquietude | (noun) feelings of anxiety that make you tense and irritable | Synonyms: edginess, inquietude, uneasiness |
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| dissimilitude | (noun) dissimilarity evidenced by an absence of likeness | Synonyms: unlikeness |
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| divide | (noun) a ridge of land that separates two adjacent river systems | Synonyms: water parting, watershed |
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| (noun) a serious disagreement between two groups of people (typically producing tension or hostility) | - |
| dockside | (noun) the region adjacent to a boat dock | - |
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| downgrade | (noun) the property possessed by a slope or surface that descends | - |
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| downside | (noun) a negative aspect of something that is generally positive | - |
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| dude | (noun) a man who is much concerned with his dress and appearance | Synonyms: beau, clotheshorse, dandy, fashion plate, fop, gallant, sheik, swell |
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| (noun) an informal form of address for a man | Synonyms: buster, fellow |
| duodiode | (noun) an electron tube having two diodes in the same envelope, with either a common cathode or separate cathodes. | - |
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| ebbtide | (noun) the tide while water is flowing out | - |
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| electrode | (noun) a conductor used to make electrical contact with some part of a circuit | - |
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| encainide | (noun) antiarrhythmic drug (trade name Enkaid) used to treat life-threatening arrhythmias but increases the risk of sudden death in heart attack patients | Synonyms: Enkaid |
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| enfilade | (noun) gunfire directed along the length rather than the breadth of a formation | Synonyms: enfilade fire |
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| episode | (noun) film consisting of a succession of related shots that develop a given subject in a movie | Synonyms: sequence |
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| (noun) a part of a broadcast serial | Synonyms: installment, instalment |
| (noun) a brief section of a literary or dramatic work that forms part of a connected series | - |
| (noun) a happening that is distinctive in a series of related events | - |
| escalade | (noun) an act of scaling by the use of ladders (especially the walls of a fortification) | - |
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| escapade | (noun) any carefree episode | Synonyms: lark |
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| (noun) a wild and exciting undertaking (not necessarily lawful) | Synonyms: adventure, dangerous undertaking, risky venture |
| esplanade | (noun) a long stretch of open level ground (paved or grassy) for walking beside the seashore | - |
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| ethanamide | (noun) a colorless solid amide of acetic acid used as a solvent and in the synthesis of organic compounds | Synonyms: acetamide |
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| ethosuximide | (noun) an anticonvulsant drug (trade names Emeside and Zarontin) used to treat petit mal epilepsy | Synonyms: Emeside, Zarontin |
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| etude | (noun) a short composition for a solo instrument; intended as an exercise or to demonstrate technical virtuosity | - |
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| eventide | (noun) the latter part of the day (the period of decreasing daylight from late afternoon until nightfall) | Synonyms: eve, even, evening |
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| exactitude | (noun) the quality of being exact | Synonyms: exactness |
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| exaltolide | (noun) the macrocyclic lactone having fifteen carbon atoms; it has a musky scent, similar to exaltone. | - |
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| exode | (noun) a farcical afterpiece in the ancient Roman theater | - |
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| eyeshade | (noun) a brim that projects to the front to shade the eyes | Synonyms: bill, peak, visor, vizor |
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| facade | (noun) the face or front of a building | Synonyms: frontage, frontal |
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| (noun) a showy misrepresentation intended to conceal something unpleasant | Synonyms: window dressing |
| fade | (noun) gradually ceasing to be visible | Synonyms: disappearance |
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| (noun) a golf shot that curves to the right for a right-handed golfer | Synonyms: slice, slicing |
| ferricyanide | (noun) salt of ferricyanic acid obtained by oxidation of a ferrocyanide | - |
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| ferrocyanide | (noun) salt of ferrocyanic acid usually obtained by a reaction of a cyanide with iron sulphate | - |
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| feticide | (noun) the act of destroying a fetus | Synonyms: aborticide |
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| fibrinopeptide | (noun) peptide released from the amino end of fibrinogen by the action of thrombin to form fibrin during clotting of the blood | - |
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| filicide | (noun) the murder of your own son or daughter | - |
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| (noun) a parent who murders his own son or daughter | - |
| finitude | (noun) the quality of being finite | Synonyms: boundedness, finiteness |
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| fireside | (noun) home symbolized as a part of the fireplace | Synonyms: hearth |
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| (noun) an area near a fireplace (usually paved and extending out into a room) | Synonyms: hearth |
| flecainide | (noun) oral antiarrhythmic medication (trade name Tambocor) used as a last resort in treating arrhythmias; increases the risk of sudden death in heart attack patients | Synonyms: Tambocor |
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| fluoride | (noun) a salt of hydrofluoric acid | - |
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| fluoroboride | (noun) a salt of fluoroboric acid | - |
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| formaldehyde | (noun) a colorless poisonous gas; made by the oxidation of methanol | Synonyms: methanal |
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| fortitude | (noun) strength of mind that enables one to endure adversity with courage | - |
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| fratricide | (noun) the murder of your sibling | - |
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| (noun) fire that injures or kills an ally | Synonyms: friendly fire |
| (noun) a person who murders their brother or sister | - |
| fungicide | (noun) any agent that destroys or prevents the growth of fungi | Synonyms: antifungal, antifungal agent, antimycotic, antimycotic agent |
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| furfuraldehyde | (noun) a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent | Synonyms: furfural |
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| furosemide | (noun) commonly used diuretic (trade name Lasix) used to treat hypertension and edema | Synonyms: Lasix |
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| fusillade | (noun) rapid simultaneous discharge of firearms | Synonyms: burst, salvo, volley |
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| gasconade | (noun) an instance of boastful talk | Synonyms: brag, bragging, crow, crowing, line-shooting, vaporing |
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| genocide | (noun) systematic killing of a racial or cultural group | Synonyms: race murder, racial extermination |
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| geode | (noun) (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals | - |
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| germicide | (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, antimicrobic, disinfectant |
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| glade | (noun) a tract of land with few or no trees in the middle of a wooded area | Synonyms: clearing |
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| glide | (noun) the act of moving smoothly along a surface while remaining in contact with it | Synonyms: coast, slide |
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| (noun) the activity of flying a glider | Synonyms: gliding, sailing, sailplaning, soaring |
| (noun) a vowellike sound that serves as a consonant | Synonyms: semivowel |
| glipizide | (noun) an oral antidiabetic drug (trade name Glucotrol) that stimulates the release of insulin from the pancreas | Synonyms: Glucotrol |
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| glissade | (noun) (ballet) a gliding or sliding step in ballet | - |
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| glucoside | (noun) a glycoside derived from glucose | - |
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| glutethimide | (noun) sedative (trade name Doriden) used to treat some sleep disorders | Synonyms: Doriden |
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| glyburide | (noun) an oral antidiabetic drug (trade names DiaBeta and Micronase) that stimulates the release of insulin from the pancreas | Synonyms: DiaBeta, Micronase |
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| glyceraldehyde | (noun) a sweet crystalline aldehyde formed by the breakdown of sugars | Synonyms: glyceric aldehyde |
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| glyceride | (noun) an ester of glycerol and fatty acids that occurs naturally as fats and fatty oils | Synonyms: acylglycerol |
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| glycoside | (noun) a group of compounds derived from monosaccharides | - |
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| gourde | (noun) the basic unit of money in Haiti | - |
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| grade | (noun) a variety of cattle produced by crossbreeding with a superior breed | - |
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| (noun) a position on a scale of intensity or amount or quality | Synonyms: degree, level |
| (noun) the gradient of a slope or road or other surface | - |
| (noun) the height of the ground on which something stands | Synonyms: ground level |
| (noun) a number or letter indicating quality (especially of a student's performance) | Synonyms: mark, score |
| (noun) a degree of ablaut | Synonyms: gradation |
| (noun) a body of students who are taught together | Synonyms: class, course, form |
| (noun) one-hundredth of a right angle | Synonyms: grad |
| (noun) a relative position or degree of value in a graded group | Synonyms: level, tier |
| gratitude | (noun) a feeling of thankfulness and appreciation | - |
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| grenade | (noun) a small explosive bomb thrown by hand or fired from a missile | - |
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| guide | (noun) a structure or marking that serves to direct the motion or positioning of something | - |
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| (noun) a model or standard for making comparisons | Synonyms: template, templet |
| (noun) something that offers basic information or instruction | Synonyms: guidebook |
| (noun) someone employed to conduct others | Synonyms: usher |
| (noun) someone who can find paths through unexplored territory | Synonyms: pathfinder, scout |
| (noun) someone who shows the way by leading or advising | - |
| habitude | (noun) habitual mode of behavior | - |
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| halide | (noun) a salt of any halogen acid | - |
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| harlequinade | (noun) acting like a clown or buffoon | Synonyms: buffoonery, clowning, frivolity, japery, prank |
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| hebetude | (noun) mental lethargy or dullness | - |
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| hemipode | (noun) small quail-like terrestrial bird of southern Eurasia and northern Africa that lacks a hind toe; classified with wading birds but inhabits grassy plains | Synonyms: bustard quail, button-quail, button quail |
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| herbicide | (noun) a chemical agent that destroys plants or inhibits their growth | Synonyms: weed killer, weedkiller |
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| hide | (noun) body covering of a living animal | Synonyms: pelt, skin |
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| (noun) the dressed skin of an animal (especially a large animal) | Synonyms: fell |
| hillside | (noun) the side or slope of a hill | - |
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| homicide | (noun) the killing of a human being by another human being | - |
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| horde | (noun) a vast multitude | Synonyms: host, legion |
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| (noun) a moving crowd | Synonyms: drove, swarm |
| (noun) a nomadic community | - |
| hornblende | (noun) a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron | - |
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| horsehide | (noun) leather from the hide of a horse | - |
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| hydathode | (noun) a pore that exudes water on the surface or margin of a leaf of higher plants | Synonyms: water pore, water stoma |
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| hydrazide | (noun) any of a class of organic compounds sharing a common functional group characterized by a nitrogen to nitrogen covalent bond with 4 substituents with at least one of them being an acyl group. | - |
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| hydride | (noun) any binary compound formed by the union of hydrogen and other elements | - |
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| hydrochloride | (noun) a complex consisting of an organic base in association with hydrogen chloride | - |
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| hydrochlorothiazide | (noun) a diuretic drug (trade name Microzide, Esidrix, and HydroDIURIL) used in the treatment of hypertension | Synonyms: Esidrix, HydroDIURIL, Microzide |
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| hydroflumethiazide | (noun) diuretic used to treat hypertension and edema | - |
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| hydroxide | (noun) a compound of an oxide with water | Synonyms: hydrated oxide |
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| (noun) a chemical compound containing the hydroxyl group | - |
| imide | (noun) any of a class of organic compounds that contain the divalent radical -CONHCO- | - |
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| inaptitude | (noun) a lack of aptitude | - |
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| incertitude | (noun) the state of being unsure of something | Synonyms: doubt, doubtfulness, dubiety, dubiousness, uncertainty |
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| indapamide | (noun) diuretic (trade name Lozal) used in the treatment of hypertension | Synonyms: Lozal |
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| ineptitude | (noun) having no qualities that would render it valuable or useful | Synonyms: worthlessness |
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| (noun) unskillfulness resulting from a lack of training | Synonyms: awkwardness, clumsiness, ineptness, maladroitness, slowness |
| inexactitude | (noun) the quality of being inexact | Synonyms: inexactness |
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| infanticide | (noun) murdering an infant | - |
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| (noun) a person who murders an infant | - |
| infinitude | (noun) the quality of being infinite; without bound or limit | Synonyms: boundlessness, infiniteness, limitlessness, unboundedness |
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| (noun) an infinite quantity | - |
| ingratitude | (noun) a lack of gratitude | Synonyms: ungratefulness |
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| inquietude | (noun) feelings of anxiety that make you tense and irritable | Synonyms: disquietude, edginess, uneasiness |
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| insecticide | (noun) a chemical used to kill insects | Synonyms: insect powder |
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| inside | (noun) the inner or enclosed surface of something | Synonyms: interior |
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| (noun) the region that is inside of something | Synonyms: interior |
| interlude | (noun) a brief show (music or dance etc) inserted between the sections of a longer performance | Synonyms: entr'acte, intermezzo |
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| (noun) an intervening period or episode | - |
| internode | (noun) a segment of a stem between two nodes | - |
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| iodide | (noun) a salt or ester of hydriodic acid | - |
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| iproclozide | (noun) an antidepressant drug that acts as a monoamine oxidase inhibitor | - |
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