| ablactation | (noun) the act of substituting other food for the mother's milk in the diet of a child or young mammal | Synonyms: weaning |
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| (noun) the cessation of lactation | - |
| affectation | (noun) a deliberate pretense or exaggerated display | Synonyms: affectedness, mannerism, pose |
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| analecta | (noun) a collection of excerpts from a literary work | Synonyms: analects |
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| angiotelectasia | (noun) dilation and enlargement of arterioles | - |
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| arctan | (noun) the inverse function of the tangent; the angle that has a tangent equal to a given number | Synonyms: arc tangent, arctangent, inverse tangent |
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| arctangent | (noun) the inverse function of the tangent; the angle that has a tangent equal to a given number | Synonyms: arc tangent, arctan, inverse tangent |
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| arteriectasia | (noun) an abnormal distension of an artery | Synonyms: arteriectasis |
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| arteriectasis | (noun) an abnormal distension of an artery | Synonyms: arteriectasia |
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| atelectasis | (noun) collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth | - |
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| chemoattractant | (noun) a substance inducing positive chemotaxis in motile cells. | - |
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| coarctation | (noun) (biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta | - |
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| (noun) tight or narrow compression | Synonyms: constriction |
| collectable | (noun) things considered to be worth collecting (not necessarily valuable or antique) | Synonyms: collectible |
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| conductance | (noun) a material's capacity to conduct electricity; measured as the reciprocal of electrical resistance | - |
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| cunctation | (noun) the act of procrastinating; putting off or delaying or deferring an action to a later time | Synonyms: procrastination, shillyshally |
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| cunctator | (noun) someone who postpones work (especially out of laziness or habitual carelessness) | Synonyms: postponer, procrastinator |
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| delectability | (noun) extreme appetizingness | Synonyms: deliciousness, lusciousness, toothsomeness |
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| delectation | (noun) act of receiving pleasure from something | Synonyms: enjoyment |
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| (noun) a feeling of extreme pleasure or satisfaction | Synonyms: delight |
| detectability | (noun) The state of being noticeable. | - |
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| dictate | (noun) a guiding principle | - |
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| (noun) an authoritative rule | - |
| dictation | (noun) speech intended for reproduction in writing | - |
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| (noun) an authoritative direction or instruction to do something | Synonyms: bid, bidding, command |
| (noun) matter that has been dictated and transcribed; a dictated passage | - |
| dictator | (noun) a ruler who is unconstrained by law | Synonyms: potentate |
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| (noun) a person who behaves in a tyrannical manner | Synonyms: authoritarian |
| (noun) a speaker who dictates to a secretary or a recording machine | - |
| dictatorship | (noun) a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.) | Synonyms: absolutism, authoritarianism, Caesarism, despotism, monocracy, one-man rule, shogunate, Stalinism, totalitarianism, tyranny |
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| disinfectant | (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, antimicrobic, germicide |
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| ectasia | (noun) dilatation or distension of a hollow organ | Synonyms: ectasis |
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| ectasis | (noun) dilatation or distension of a hollow organ | Synonyms: ectasia |
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| eructation | (noun) a reflex that expels gas noisily from the stomach through the mouth | Synonyms: belch, belching, burp, burping |
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| (noun) (of volcanoes) pouring out fumes or lava (or a deposit so formed) | Synonyms: eruption, extravasation |
| exacta | (noun) a bet that you can pick the first and second finishers in the right order | Synonyms: perfecta |
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| expectancy | (noun) something expected (as on the basis of a norm) | Synonyms: anticipation |
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| (noun) an expectation | Synonyms: anticipation |
| expectation | (noun) belief about (or mental picture of) the future | Synonyms: outlook, prospect |
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| (noun) the sum of the values of a random variable divided by the number of values | Synonyms: arithmetic mean, expected value, first moment |
| (noun) the feeling that something is about to happen | - |
| (noun) anticipating with confidence of fulfillment | Synonyms: anticipation |
| extractant | (noun) an immiscible liquid used to extract a substance from another liquid. | - |
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| fractal | (noun) (mathematics) a geometric pattern that is repeated at every scale and so cannot be represented by classical geometry | - |
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| galactagogue | (noun) agent that induces milk secretion | - |
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| hectare | (noun) (abbreviated `ha') a unit of surface area equal to 100 ares (or 10,000 square meters) | - |
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| humectant | (noun) any substance that is added to another substance to keep it moist | - |
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| indictability | (noun) the state of being liable to impeachment | Synonyms: impeachability |
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| inductance | (noun) an electrical device (typically a conducting coil) that introduces inductance into a circuit | Synonyms: inductor |
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| (noun) an electrical phenomenon whereby an electromotive force (EMF) is generated in a closed circuit by a change in the flow of current | Synonyms: induction |
| ineluctability | (noun) the quality of being impossible to avoid or evade | Synonyms: unavoidability |
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| injectant | (noun) any solution that is injected (as into the skin) | Synonyms: injection |
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| intractability | (noun) the trait of being hard to influence or control | Synonyms: intractableness |
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| intractableness | (noun) the trait of being hard to influence or control | Synonyms: intractability |
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| jactation | (noun) (pathology) extremely restless tossing and twitching usually by a person with a severe illness | Synonyms: jactitation |
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| keratectasia | (noun) abnormal bulging of the cornea of the eye | - |
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| lactalbumin | (noun) albumin occurring in milk | - |
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| lactase | (noun) any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose | Synonyms: Lactaid |
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| lactate | (noun) a salt or ester of lactic acid | - |
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| lactation | (noun) feeding an infant by giving suck at the breast | Synonyms: suckling |
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| (noun) the production and secretion of milk by the mammary glands | - |
| (noun) the period following birth during which milk is secreted | - |
| 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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| nectar | (noun) (classical mythology) the food and drink of the gods; mortals who ate it became immortal | Synonyms: ambrosia |
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| (noun) fruit juice especially when undiluted | - |
| (noun) a sweet liquid secretion that is attractive to pollinators | - |
| nectarine | (noun) a variety or mutation of the peach that has a smooth skin | - |
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| (noun) variety or mutation of the peach bearing fruit with smooth skin and (usually) yellow flesh | Synonyms: nectarine tree, Prunus persica nectarina |
| nectary | (noun) a gland (often a protuberance or depression) that secretes nectar | Synonyms: honey gland |
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| nictation | (noun) a reflex that closes and opens the eyes rapidly | Synonyms: blink, blinking, eye blink, nictitation, wink, winking |
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| noctambulation | (noun) walking by a person who is asleep | Synonyms: noctambulism, sleepwalking, somnambulation, somnambulism |
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| noctambulism | (noun) walking by a person who is asleep | Synonyms: noctambulation, sleepwalking, somnambulation, somnambulism |
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| noctambulist | (noun) someone who walks about in their sleep | Synonyms: sleepwalker, somnambulist |
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| nyctalopia | (noun) inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder | Synonyms: moon blindness, night blindness |
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| octad | (noun) the cardinal number that is the sum of seven and one | Synonyms: 8, eight, eighter, eighter from Decatur, octet, octonary, ogdoad, VIII |
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| octagon | (noun) an eight-sided polygon | - |
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| octahedron | (noun) any polyhedron having eight plane faces | - |
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| octameter | (noun) a verse line having eight metrical feet | - |
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| octane | (noun) any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent | - |
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| octant | (noun) a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration | - |
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| octave | (noun) a musical interval of eight tones | Synonyms: musical octave |
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| (noun) a rhythmic group of eight lines of verse | - |
| (noun) a feast day and the seven days following it | - |
| octavo | (noun) the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves | Synonyms: 8vo, eightvo |
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| oxidoreductase | (noun) an enzyme that catalyzes oxidation-reduction | - |
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| perfecta | (noun) a bet that you can pick the first and second finishers in the right order | Synonyms: exacta |
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| predictability | (noun) the quality of being predictable | - |
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| proctalgia | (noun) pain in the rectum | - |
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| reactance | (noun) opposition to the flow of electric current resulting from inductance and capacitance (rather than resistance) | - |
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| reactant | (noun) a chemical substance that is present at the start of a chemical reaction | - |
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| rectangle | (noun) a parallelogram with four right angles | - |
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| rectangularity | (noun) the property of being shaped like a rectangle | Synonyms: oblongness |
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| reductant | (noun) a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver | Synonyms: reducer, reducing agent |
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| reductase | (noun) an enzyme that catalyses the biochemical reduction of some specified substance | - |
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| reflectance | (noun) the fraction of radiant energy that is reflected from a surface | Synonyms: coefficient of reflection, reflection factor, reflectivity |
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| reluctance | (noun) a certain degree of unwillingness | Synonyms: disinclination, hesitancy, hesitation, indisposition |
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| (noun) (physics) opposition to magnetic flux (analogous to electric resistance) | - |
| respectability | (noun) honorableness by virtue of being respectable and having a good reputation | Synonyms: reputability |
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| sectarian | (noun) a member of a sect | Synonyms: sectarist, sectary |
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| sectarianism | (noun) a narrow-minded adherence to a particular sect or party or denomination | Synonyms: denominationalism |
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| sectarist | (noun) a member of a sect | Synonyms: sectarian, sectary |
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| sectary | (noun) a member of a sect | Synonyms: sectarian, sectarist |
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| spectacle | (noun) a blunder that makes you look ridiculous; used in the phrase `make a spectacle of' yourself | - |
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| (noun) an elaborate and remarkable display on a lavish scale | - |
| (noun) something or someone seen (especially a notable or unusual sight) | - |
| spectacles | (noun) (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision | Synonyms: eyeglasses, glasses, specs |
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| spectacular | (noun) a lavishly produced performance | - |
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| spectator | (noun) a woman's pump with medium heel; usually in contrasting colors for toe and heel | Synonyms: spectator pump |
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| (noun) a close observer; someone who looks at something (such as an exhibition of some kind) | Synonyms: looker, viewer, watcher, witness |
| superfecta | (noun) a bet that you can pick the first four finishers in a race in the right order | - |
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| surfactant | (noun) a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved | Synonyms: surface-active agent, wetter, wetting agent |
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| tictac | (noun) steady recurrent ticking sound as made by a clock | Synonyms: ticktock, tocktact |
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| tractability | (noun) the trait of being easily persuaded | Synonyms: flexibility, tractableness |
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| tractableness | (noun) the trait of being easily persuaded | Synonyms: flexibility, tractability |
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| unpredictability | (noun) lacking predictability | - |
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| (noun) the trait of being unpredictably irresolute | Synonyms: volatility |
| (noun) the quality of being guided by sudden unpredictable impulses | Synonyms: capriciousness |
| unrespectability | (noun) dishonorableness by virtue of lacking respectability or a good reputation | Synonyms: disreputability, disreputableness |
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