| megrims | (noun) a state of depression | Synonyms: blue devils, blues, vapors, vapours |
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| mei | (noun) Japanese ornamental tree with fragrant white or pink blossoms and small yellow fruits | Synonyms: Japanese apricot, Prunus mume |
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| meiosis | (noun) understatement for rhetorical effect (especially when expressing an affirmative by negating its contrary) | Synonyms: litotes |
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| (noun) (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants) | Synonyms: miosis, reduction division |
| meitnerium | (noun) a radioactive transuranic element, with atomic number 109 | Synonyms: atomic number 109, element 109, Mt |
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| melaena | (noun) abnormally dark tarry feces containing blood (usually from gastrointestinal bleeding) | Synonyms: melena |
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| melagra | (noun) rheumatic or myalgic pains in the arms or legs | - |
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| melamine | (noun) a white crystalline organic base; used mainly in making melamine resins | Synonyms: cyanuramide |
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| melancholia | (noun) extreme depression characterized by tearful sadness and irrational fears | - |
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| melancholiac | (noun) someone subject to melancholia | Synonyms: melancholic |
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| melancholic | (noun) someone subject to melancholia | Synonyms: melancholiac |
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| melancholy | (noun) a humor that was once believed to be secreted by the kidneys or spleen and to cause sadness and melancholy | Synonyms: black bile |
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| (noun) a feeling of thoughtful sadness | - |
| (noun) a constitutional tendency to be gloomy and depressed | - |
| melange | (noun) a motley assortment of things | Synonyms: farrago, gallimaufry, hodgepodge, hotchpotch, mingle-mangle, mishmash, oddments, odds and ends, omnium-gatherum, ragbag |
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| melanin | (noun) insoluble pigments that account for the color of e.g. skin and scales and feathers | - |
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| melanism | (noun) a condition characterized by abnormal deposits of melanin (especially in the skin) | Synonyms: melanosis |
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| melanoblast | (noun) an epidermal cell that is a precursor of a melanocyte | - |
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| melanocyte | (noun) a cell in the basal layer of the epidermis that produces melanin under the control of the melanocyte-stimulating hormone | - |
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| melanoderma | (noun) abnormally dark skin caused by increased deposits of melatonin | - |
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| melanoma | (noun) any of several malignant neoplasms (usually of the skin) consisting of melanocytes | Synonyms: malignant melanoma |
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| melanosis | (noun) a condition characterized by abnormal deposits of melanin (especially in the skin) | Synonyms: melanism |
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| melasma | (noun) a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives | Synonyms: chloasma, mask of pregnancy |
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| melatonin | (noun) hormone secreted by the pineal gland | - |
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| meld | (noun) a form of rummy using two decks of cards and four jokers; jokers and deuces are wild; the object is to form groups of the same rank | Synonyms: basket rummy, canasta |
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| melee | (noun) a noisy riotous fight | Synonyms: battle royal, scrimmage |
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| melena | (noun) abnormally dark tarry feces containing blood (usually from gastrointestinal bleeding) | Synonyms: melaena |
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| melilot | (noun) erect annual or biennial plant grown extensively especially for hay and soil improvement | Synonyms: melilotus, sweet clover |
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| melilotus | (noun) erect annual or biennial plant grown extensively especially for hay and soil improvement | Synonyms: melilot, sweet clover |
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| melioration | (noun) the act of relieving ills and changing for the better | Synonyms: amelioration, betterment |
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| (noun) the linguistic process in which over a period of time a word grows more positive in connotation or more elevated in meaning | - |
| (noun) a condition superior to an earlier condition | Synonyms: improvement |
| meliorism | (noun) the belief that the world can be made better by human effort | - |
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| meliorist | (noun) a disputant who advocates reform | Synonyms: crusader, reformer, reformist, social reformer |
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| mellitate | (noun) a salt of mellitic acid. | - |
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| mellowing | (noun) the process of becoming mellow | - |
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| mellowness | (noun) the property of a sensation that is rich and pleasing | Synonyms: fullness, richness |
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| (noun) a soft shade of a color | - |
| (noun) geniality, as through the effects of alcohol or marijuana | - |
| (noun) a taste (especially of fruit) that is ripe and of full flavor | - |
| (noun) a feeling of good humor and sympathy through maturity or intoxication or a relaxed state | - |
| melodiousness | (noun) the property of having a melody | Synonyms: tunefulness |
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| melodrama | (noun) an extravagant comedy in which action is more salient than characterization | - |
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| melody | (noun) the perception of pleasant arrangements of musical notes | Synonyms: tonal pattern |
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| (noun) a succession of notes forming a distinctive sequence | Synonyms: air, line, melodic line, melodic phrase, strain, tune |
| meloid | (noun) beetle that produces a secretion that blisters the skin | Synonyms: blister beetle |
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| melon | (noun) any of numerous fruits of the gourd family having a hard rind and sweet juicy flesh | - |
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| (noun) any of various fruit of cucurbitaceous vines including: muskmelons, watermelons, cantaloupes, cucumbers | Synonyms: melon vine |
| melosa | (noun) South American herb with sticky glandular foliage; source of madia oil | Synonyms: Chile tarweed, madia oil plant, Madia sativa |
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| melphalan | (noun) antineoplastic drug (trade name Alkeran) used to treat multiple myeloma and some other malignancies | Synonyms: Alkeran |
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| melt | (noun) the process whereby heat changes something from a solid to a liquid | Synonyms: melting, thaw, thawing |
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| meltability | (noun) Capability of being reduced from a solid to a liquid state usually by heat. | - |
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| meltdown | (noun) a disaster comparable to a nuclear meltdown | - |
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| (noun) severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping | Synonyms: nuclear meltdown |
| melter | (noun) a worker who melts substances (metal or wax etc.) | - |
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| melting | (noun) the process whereby heat changes something from a solid to a liquid | Synonyms: melt, thaw, thawing |
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| meltwater | (noun) melted snow or ice | - |
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| mem | (noun) the 13th letter of the Hebrew alphabet | - |
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| member | (noun) an external body part that projects from the body | Synonyms: appendage, extremity |
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| (noun) the male sex organ | Synonyms: penis, phallus |
| (noun) an organization that is a member of another organization (especially a state that belongs to a group of nations) | - |
| (noun) one of the persons who compose a social group (especially individuals who have joined and participate in a group organization) | Synonyms: fellow member |
| (noun) anything that belongs to a set or class | - |
| membership | (noun) the body of members of an organization or group | Synonyms: rank |
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| (noun) the state of being a member | - |
| membrane | (noun) a thin pliable sheet of material | - |
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| (noun) a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants | Synonyms: tissue layer |
| membranophone | (noun) a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end | Synonyms: drum, tympan |
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| meme | (noun) a cultural unit (an idea or value or pattern of behavior) that is passed from one person to another by non-genetic means (as by imitation) | - |
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| memento | (noun) a reminder of past events | Synonyms: souvenir |
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| memetics | (noun) a theory of mental content based on an analogy with Darwinian evolution. | - |
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| memo | (noun) a written proposal or reminder | Synonyms: memoranda, memorandum |
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| memoir | (noun) an account of the author's personal experiences | - |
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| (noun) an essay on a scientific or scholarly topic | - |
| memorabilia | (noun) a record of things worth remembering | - |
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| memorability | (noun) the quality of being worth remembering | - |
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| memoranda | (noun) a written proposal or reminder | Synonyms: memo, memorandum |
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| memorandum | (noun) a written proposal or reminder | Synonyms: memo, memoranda |
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| memorial | (noun) a structure erected to commemorate persons or events | Synonyms: monument |
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| (noun) a recognition of meritorious service | Synonyms: commemoration, remembrance |
| (noun) a written statement of facts submitted in conjunction with a petition to an authority | - |
| memorialisation | (noun) a ceremony to honor the memory of someone or something | Synonyms: commemoration, memorialization |
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| memorialization | (noun) a ceremony to honor the memory of someone or something | Synonyms: commemoration, memorialisation |
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| memorisation | (noun) learning so as to be able to remember verbatim | Synonyms: committal to memory, memorization |
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| memoriser | (noun) a person who learns by rote | Synonyms: memorizer |
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| memorization | (noun) learning so as to be able to remember verbatim | Synonyms: committal to memory, memorisation |
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| memorizer | (noun) a person who learns by rote | Synonyms: memoriser |
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| memory | (noun) an electronic memory device | Synonyms: computer memory, computer storage, memory board, storage, store |
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| (noun) the power of retaining and recalling past experience | Synonyms: retention, retentiveness, retentivity |
| (noun) the cognitive processes whereby past experience is remembered | Synonyms: remembering |
| (noun) something that is remembered | - |
| (noun) the area of cognitive psychology that studies memory processes | - |
| memsahib | (noun) a woman sahib | - |
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| men | (noun) the force of workers available | Synonyms: hands, manpower, work force, workforce |
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| menace | (noun) a threat or the act of threatening | - |
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| (noun) something that is a source of danger | Synonyms: threat |
| menadione | (noun) a synthetic chemical compound that is a form of vitamin K, it is an analog of 1,4-naphthoquinone with a methyl group in the 2-position | Synonyms: vitamin K3 |
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| menage | (noun) a social unit living together | Synonyms: family, home, house, household |
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| menagerie | (noun) the facility where wild animals are housed for exhibition | Synonyms: zoo, zoological garden |
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| (noun) a collection of live animals for study or display | - |
| menarche | (noun) the first occurrence of menstruation in a woman | - |
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| mend | (noun) the act of putting something in working order again | Synonyms: fix, fixing, fixture, mending, repair, reparation |
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| (noun) sewing that repairs a worn or torn hole (especially in a garment) | Synonyms: darn, patch |
| mendacity | (noun) the tendency to be untruthful | - |
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| mendelevium | (noun) a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol) | Synonyms: atomic number 101, Md, Mv |
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| mender | (noun) a skilled worker who mends or repairs things | Synonyms: fixer, repairer |
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| mendicancy | (noun) a solicitation for money or food (especially in the street by an apparently penniless person) | Synonyms: beggary, begging |
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| (noun) the state of being a beggar or mendicant | Synonyms: beggary, mendicity |
| mendicant | (noun) a pauper who lives by begging | Synonyms: beggar |
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| (noun) a male member of a religious order that originally relied solely on alms | Synonyms: friar |
| mendicity | (noun) the state of being a beggar or mendicant | Synonyms: beggary, mendicancy |
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| mending | (noun) the act of putting something in working order again | Synonyms: fix, fixing, fixture, mend, repair, reparation |
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| (noun) garments that must be repaired | - |
| menhaden | (noun) shad-like North American marine fishes used for fish meal and oil and fertilizer | Synonyms: Brevoortia tyrannis |
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| menhir | (noun) a tall upright megalith; found primarily in England and northern France | Synonyms: standing stone |
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| menial | (noun) a domestic servant | - |
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| meninges | (noun) a membrane (one of 3) that envelops the brain and spinal cord | Synonyms: meninx |
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| meningioma | (noun) a tumor arising in the meninges which surround the brain and spinal cord; usually slow growing and sometimes malignant | - |
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| meningism | (noun) symptoms that mimic those of meningitis but without inflammation of the meninges | - |
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| meningitis | (noun) infectious disease characterized by inflammation of the meninges (the tissues that surround the brain or spinal cord) usually caused by a bacterial infection; symptoms include headache and stiff neck and fever and nausea | - |
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| meningocele | (noun) a congenital anomaly of the central nervous system in which a sac protruding from the brain or the spinal meninges contains cerebrospinal fluid (but no nerve tissue) | - |
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| meningoencephalitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: cerebromeningitis, encephalomeningitis |
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| meninx | (noun) a membrane (one of 3) that envelops the brain and spinal cord | Synonyms: meninges |
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| meniscectomy | (noun) surgical removal of the meniscus of the knee | - |
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| meniscus | (noun) (physics) the curved upper surface of a nonturbulent liquid in a vertical tube | - |
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| (noun) (optics) a lens that is concave on one side and convex on the other | - |
| (noun) (anatomy) a disk of cartilage that serves as a cushion between the ends of bones that meet at a joint | Synonyms: semilunar cartilage |
| menopause | (noun) the time in a woman's life in which the menstrual cycle ends | Synonyms: change of life, climacteric |
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| menorah | (noun) (Judaism) a candelabrum with nine branches; used during the Hanukkah festival | - |
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| menorrhagia | (noun) abnormally heavy or prolonged menstruation; can be a symptom of uterine tumors and can lead to anemia if prolonged | Synonyms: hypermenorrhea |
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| menorrhea | (noun) flow of blood from the uterus; occurs at roughly monthly intervals during a woman's reproductive years | Synonyms: menstrual blood, menstrual flow |
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| mensch | (noun) a decent responsible person with admirable characteristics | Synonyms: mensh |
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| menses | (noun) the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause | Synonyms: catamenia, flow, menstruation, menstruum, period |
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