| acromphalus | (noun) abnormal protrusion of the navel; sometimes the start of umbilical hernia | - |
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| amphetamine | (noun) a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression | Synonyms: pep pill, speed, upper |
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| amphibia | (noun) the class of vertebrates that live on land but breed in water, frogs, toads, newts, salamanders, caecilians | Synonyms: class Amphibia |
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| amphibian | (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibious |
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| (noun) cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form | - |
| (noun) an airplane designed to take off and land on water | Synonyms: amphibious aircraft |
| (noun) a flat-bottomed motor vehicle that can travel on land or water | Synonyms: amphibious vehicle |
| amphibiotic | (adjective) having an aquatic early or larval form and a terrestrial adult form | Synonyms: semiaquatic |
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| amphibious | (adjective) operating or living on land and in water | - |
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| (adjective) relating to or characteristic of animals of the class Amphibia | Synonyms: amphibian |
| amphibole | (noun) a mineral or mineral variety belonging to the amphibole group | - |
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| amphibolite | (noun) a metamorphic rock composed chiefly of amphibole and plagioclase | - |
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| amphibology | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphiboly |
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| amphiboly | (noun) an ambiguous grammatical construction; e.g., `they are flying planes' can mean either that someone is flying planes or that something is flying planes | Synonyms: amphibology |
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| amphibrach | (noun) a metrical unit with unstressed-stressed-unstressed syllables (e.g., `remember') | - |
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| amphictyony | (noun) an association of neighboring states or tribes in ancient Greece; established originally to defend a common religious center | - |
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| amphidiploid | (noun) (genetics) an organism or cell having a diploid set of chromosomes from each parent | - |
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| amphidiploidy | (noun) the condition of being amphidiploid | - |
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| amphigory | (noun) nonsensical writing (usually verse) | Synonyms: nonsense verse |
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| amphimixis | (noun) union of sperm and egg in sexual reproduction | - |
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| (noun) reproduction involving the union or fusion of a male and a female gamete | Synonyms: sexual reproduction |
| amphioxus | (noun) small translucent lancet-shaped burrowing marine animal; primitive forerunner of the vertebrates | Synonyms: lancelet |
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| amphipod | (noun) a kind of malacostracan crustacean | - |
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| amphiprostylar | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostyle, amphistylar, porticoed |
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| amphiprostyle | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostylar, amphistylar, porticoed |
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| amphiprotic | (adjective) having characteristics of both an acid and a base and capable of reacting as either | Synonyms: amphoteric |
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| amphisbaena | (noun) (classical mythology) a serpent with a head at each end of its body | - |
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| amphistylar | (adjective) marked by columniation having free columns in porticoes either at both ends or at both sides of a structure | Synonyms: amphiprostylar, amphiprostyle, porticoed |
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| (adjective) having columns either at both ends or at both sides | - |
| amphitheater | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheatre, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheatre |
| amphitheatre | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheater, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheater |
| amphitheatric | (adjective) of or related to an amphitheater | Synonyms: amphitheatrical |
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| amphitheatrical | (adjective) of or related to an amphitheater | Synonyms: amphitheatric |
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| amphitropous | (adjective) (of a plant ovule) partly inverted; turned back 90 degrees on its stalk | - |
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| amphiuma | (noun) aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States | Synonyms: blind eel, congo eel, congo snake |
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| ampholyte | (noun) A substance that acts as a base or an acid, depending on the pH of the solution into which it is introduced. | Synonyms: amphoteric electrolyte |
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| amphora | (noun) an ancient jar with two handles and a narrow neck; used to hold oil or wine | - |
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| amphoric | (adjective) the sound heard in auscultation resembling the hollow sound made by blowing across the mouth of a bottle | - |
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| amphoteric | (adjective) having characteristics of both an acid and a base and capable of reacting as either | Synonyms: amphiprotic |
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| amphotericin | (noun) an antibiotic and antifungal agent | - |
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| bumph | (noun) reading materials (documents, written information) that you must read and deal with but that you think are extremely boring | Synonyms: bumf |
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| camphor | (noun) a resin obtained from the camphor tree; used in making celluloid and liniment | - |
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| camphoraceous | (adjective) being or having the properties of camphor | - |
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| camphorate | (verb) treat with camphor | - |
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| camphorated | (adjective) impregnated with camphor | - |
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| camphoric | (adjective) relating to or derived from or containing camphor | - |
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| camphorweed | (noun) aromatic plant of western United States | Synonyms: Trichostema lanceolatum, turpentine camphor weed, vinegarweed |
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| chloramphenicol | (noun) an oral antibiotic (trade name Chloromycetin) used to treat serious infections (especially typhoid fever) | Synonyms: Chloromycetin |
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| emphasis | (noun) intensity or forcefulness of expression | Synonyms: vehemence |
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| (noun) the relative prominence of a syllable or musical note (especially with regard to stress or pitch) | Synonyms: accent, stress |
| (noun) special and significant stress by means of position or repetition e.g. | - |
| (noun) special importance or significance | Synonyms: accent |
| emphasise | (verb) to stress, single out as important | Synonyms: accent, accentuate, emphasize, punctuate, stress |
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| (verb) give extra weight to (a communication) | Synonyms: emphasize, underline, underscore |
| emphasised | (adjective) spoken with emphasis | Synonyms: emphasized, emphatic |
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| emphasize | (verb) to stress, single out as important | Synonyms: accent, accentuate, emphasise, punctuate, stress |
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| (verb) give extra weight to (a communication) | Synonyms: emphasise, underline, underscore |
| emphasized | (adjective) spoken with emphasis | Synonyms: emphasised, emphatic |
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| emphasizing | (noun) the act of giving special importance or significance to something | Synonyms: accenting, accentuation |
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| emphatic | (adjective) forceful and definite in expression or action | Synonyms: forceful |
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| (adjective) sudden and strong | Synonyms: exclamatory |
| (adjective) spoken with emphasis | Synonyms: emphasised, emphasized |
| emphatically | (adverb) without question and beyond doubt | Synonyms: by all odds, decidedly, definitely, in spades, unquestionably |
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| emphysema | (noun) an abnormal condition of the lungs marked by decreased respiratory function; associated with smoking or chronic bronchitis or old age | Synonyms: pulmonary emphysema |
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| emphysematous | (adjective) relating to or resembling or being emphysema | - |
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| endolymph | (noun) the bodily fluid that fills the membranous labyrinth of the inner ear | - |
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| exomphalos | (noun) an umbilical hernia at birth in which some abdominal organs push into the umbilical cord | - |
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| galumph | (verb) move around heavily and clumsily | - |
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| gomphothere | (noun) extinct elephants of Central American and South America; of the Miocene and Pleistocene | - |
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| karyolymph | (noun) a clear liquid in the cell nucleus in which the nucleolus and chromatin and other structures are dispersed | - |
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| lamphouse | (noun) housing that holds a lamp (as in a movie projector) | Synonyms: lamp house, lamp housing |
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| lymph | (noun) a thin coagulable fluid (similar to plasma but) containing white blood cells (lymphocytes) and chyle; is conveyed to the blood stream by lymphatic vessels | - |
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| lymphadenitis | (noun) inflammation of lymph nodes | - |
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| lymphadenoma | (noun) an abnormally enlarged lymph node | - |
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| lymphadenopathy | (noun) chronic abnormal enlargement of the lymph nodes (usually associated with disease) | - |
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| lymphangiectasia | (noun) dilatation of a lymph vessel | Synonyms: lymphangiectasis |
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| lymphangiectasis | (noun) dilatation of a lymph vessel | Synonyms: lymphangiectasia |
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| lymphangiogram | (noun) an angiogram of the lymph nodes and lymph vessels made after the injection of a radiopaque substance | - |
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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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| lymphangioma | (noun) benign angioma consisting of a mass of lymphatic vessels | - |
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| lymphangitis | (noun) inflammation of a lymph vessel | - |
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| lymphatic | (adjective) of or relating to or produced by lymph | - |
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| lymphedema | (noun) swelling (usually in the legs) caused by lymph accumulating in the tissues in the affected areas | - |
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| lymphoblast | (noun) an immature lymphocyte | - |
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| lymphocyte | (noun) an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection | Synonyms: lymph cell |
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| lymphocytic | (adjective) of or relating to lymphocytes | - |
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| lymphocytopenia | (noun) an abnormally small number of lymphocytes in the circulating blood | Synonyms: lymphopenia |
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| lymphocytosis | (noun) an abnormal increase in the number of lymphocytes in the circulating blood | - |
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| lymphogranuloma | (noun) swelling of a lymph node | - |
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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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| lymphoid | (adjective) resembling lymph or lymphatic tissues | - |
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| lymphokine | (noun) a cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages) | - |
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| lymphoma | (noun) a neoplasm of lymph tissue that is usually malignant; one of the four major types of cancer | - |
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| lymphopenia | (noun) an abnormally small number of lymphocytes in the circulating blood | Synonyms: lymphocytopenia |
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| lymphopoiesis | (noun) the formation of lymphocytes in the bone marrow and lymph nodes and thymus and spleen | - |
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| lymphuria | (noun) the presence of lymph in the urine | - |
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| methamphetamine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, deoxyephedrine, glass, ice, meth, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| methylenedioxymethamphetamine | (noun) a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States | Synonyms: MDMA |
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| mph | (noun) a speedometer reading for the momentary rate of travel | Synonyms: miles per hour |
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| (noun) the ratio of the distance traveled (in miles) to the time spent traveling (in hours) | Synonyms: miles per hour |
| nymph | (noun) a larva of an insect with incomplete metamorphosis (as the dragonfly or mayfly) | - |
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| (noun) (classical mythology) a minor nature goddess usually depicted as a beautiful maiden | - |
| (noun) a voluptuously beautiful young woman | Synonyms: houri |
| nymphalid | (noun) medium to large butterflies found worldwide typically having brightly colored wings and much-reduced nonfunctional forelegs carried folded on the breast | Synonyms: brush-footed butterfly, four-footed butterfly, nymphalid butterfly |
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| nymphet | (noun) a sexually attractive young woman | - |
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| nympho | (noun) a woman with abnormal sexual desires | Synonyms: nymphomaniac |
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| nympholepsy | (noun) a frenzy of emotion; as for something unattainable | - |
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| nympholept | (noun) a person seized by nympholepsy | - |
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| nymphomania | (noun) abnormally intense sexual desire in women | - |
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| nymphomaniac | (adjective) (used of women) affected with excessive sexual desire | Synonyms: nymphomaniacal |
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| (noun) a woman with abnormal sexual desires | Synonyms: nympho |
| nymphomaniacal | (adjective) (used of women) affected with excessive sexual desire | Synonyms: nymphomaniac |
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| omphalocele | (noun) protrusion of the intestine and omentum through a hernia in the abdominal wall near the navel; usually self correcting after birth | Synonyms: umbilical hernia |
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| omphalos | (noun) a scar where the umbilical cord was attached | Synonyms: belly button, bellybutton, navel, omphalus, umbilicus |
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| omphaloskepsis | (noun) literally, the contemplation of one's navel, which is an idiom usually meaning complacent self-absorption | Synonyms: navel-gazing |
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| omphalus | (noun) a scar where the umbilical cord was attached | Synonyms: belly button, bellybutton, navel, omphalos, umbilicus |
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| oomph | (noun) the activeness of an energetic personality | Synonyms: dynamism, pizzaz, pizzazz, zing |
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| (noun) attractiveness to the opposite sex | Synonyms: desirability, desirableness, sex appeal |