| myelomeningocele | (noun) a congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation | - |
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| opening | (noun) a recognized sequence of moves at the beginning of a game of chess | Synonyms: chess opening |
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| (noun) the act of opening something | - |
| (noun) becoming open or being made open | - |
| (noun) the first of a series of actions | Synonyms: first step, initiative, opening move |
| (noun) a vacant or unobstructed space that is man-made | - |
| (noun) an entrance equipped with a hatch; especially a passageway between decks of a ship | Synonyms: hatchway, scuttle |
| (noun) an aperture or hole that opens into a bodily cavity | Synonyms: orifice, porta |
| (noun) a possible alternative | Synonyms: possibility, possible action |
| (noun) the initial part of the introduction | - |
| (noun) the first performance (as of a theatrical production) | Synonyms: curtain raising, opening night |
| (noun) a ceremony accompanying the start of some enterprise | - |
| (noun) an open or empty space in or between things | Synonyms: gap |
| (noun) opportunity especially for employment or promotion | - |
| overreckoning | (noun) a calculation that results in an estimate that is too high | Synonyms: overestimate, overestimation, overrating |
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| partitioning | (noun) the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart | Synonyms: division, partition, sectionalisation, sectionalization, segmentation |
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| (noun) an analysis into mutually exclusive categories | Synonyms: breakdown |
| penning | (noun) the act of creating written works | Synonyms: authorship, composition, writing |
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| pining | (noun) a feeling of deep longing | - |
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| pinning | (noun) a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin | - |
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| planning | (noun) an act of formulating a program for a definite course of action | - |
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| (noun) the act or process of drawing up plans or layouts for some project or enterprise | - |
| (noun) the cognitive process of thinking about what you will do in the event of something happening | Synonyms: preparation, provision |
| poisoning | (noun) the act of giving poison to a person or animal with the intent to kill | - |
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| (noun) the physiological state produced by a poison or other toxic substance | Synonyms: intoxication, toxic condition |
| positioning | (noun) the act of putting something in a certain place | Synonyms: emplacement, locating, location, placement, position |
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| pruning | (noun) the act of trimming a plant | - |
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| (noun) something that has been pruned off of a plant | - |
| punning | (noun) a humorous play on words | Synonyms: paronomasia, pun, wordplay |
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| questioning | (noun) a request for information | Synonyms: inquiring |
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| quickening | (noun) the act of accelerating; increasing the speed | Synonyms: acceleration, speedup |
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| (noun) the process of showing signs of life | - |
| (noun) the stage of pregnancy at which the mother first feels the movements of the fetus | - |
| rationing | (noun) the act of rationing | - |
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| reasoning | (noun) thinking that is coherent and logical | Synonyms: abstract thought, logical thinking |
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| reckoning | (noun) the act of counting; reciting numbers in ascending order | Synonyms: count, counting, enumeration, numeration, tally |
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| (noun) problem solving that involves numbers or quantities | Synonyms: calculation, computation, figuring |
| (noun) a bill for an amount due | Synonyms: tally |
| reclining | (noun) the act of assuming or maintaining a reclining position | - |
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| refining | (noun) the process of removing impurities (as from oil or metals or sugar etc.) | Synonyms: purification, refinement |
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| regaining | (noun) getting something back again | Synonyms: restitution, restoration, return |
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| relistening | (noun) the act of hearing again | Synonyms: rehearing |
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| repositioning | (noun) the act of placing in a new position | - |
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| retraining | (noun) training for a new occupation | - |
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| ripening | (noun) coming to full development; becoming mature | Synonyms: maturation, maturement |
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| (noun) acquiring desirable qualities by being left undisturbed for some time | Synonyms: ageing, aging |
| ruining | (noun) destruction achieved by causing something to be wrecked or ruined | Synonyms: laying waste, ruin, ruination, wrecking |
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| running | (noun) the act of participating in an athletic competition involving running on a track | Synonyms: track |
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| (noun) the act of running; traveling on foot at a fast pace | Synonyms: run |
| (noun) the act of administering or being in charge of something | - |
| (noun) (American football) a play in which a player attempts to carry the ball through or past the opposing team | Synonyms: run, running game, running play |
| (noun) the state of being in operation | - |
| sailplaning | (noun) the activity of flying a glider | Synonyms: glide, gliding, sailing, soaring |
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| scanning | (noun) the act of systematically moving a finely focused beam of light or electrons over a surface in order to produce an image of it for analysis or transmission | - |
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| (noun) the process of translating photographs into a digital form that can be recognized by a computer | - |
| screening | (noun) the act of concealing the existence of something by obstructing the view of it | Synonyms: cover, covering, masking |
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| (noun) testing objects or persons in order to identify those with particular characteristics | - |
| (noun) fabric of metal or plastic mesh | - |
| (noun) the display of a motion picture | Synonyms: showing, viewing |
| seasoning | (noun) the act of adding a seasoning to food | - |
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| (noun) something added to food primarily for the savor it imparts | Synonyms: flavorer, flavoring, flavourer, flavouring, seasoner |
| shining | (noun) the work of making something smooth and shiny by rubbing or waxing it | Synonyms: polishing |
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| shortening | (noun) act of decreasing in length | - |
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| (noun) fat such as butter or lard used in baked goods | - |
| shunning | (noun) deliberately avoiding; keeping away from or preventing from happening | Synonyms: avoidance, dodging, turning away |
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| sickeningness | (noun) extreme unpalatability to the mouth | Synonyms: disgustingness, distastefulness, nauseatingness, unsavoriness |
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| signing | (noun) language expressed by visible hand gestures | Synonyms: sign language |
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| sinning | (noun) an act that is regarded by theologians as a transgression of God's will | Synonyms: sin |
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| slackening | (noun) an occurrence of control or strength weakening | Synonyms: loosening, relaxation |
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| softening | (noun) the process of becoming softer | - |
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| spinning | (noun) creating thread | - |
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| staining | (noun) (histology) the use of a dye to color specimens for microscopic study | - |
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| (noun) the act of spotting or staining something | Synonyms: maculation, spotting |
| stiffening | (noun) the act of becoming stiff | - |
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| (noun) the process of becoming stiff or rigid | Synonyms: rigidification, rigidifying |
| stoning | (noun) the act of pelting with stones; punishment inflicted by throwing stones at the victim (even unto death) | Synonyms: lapidation |
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| straining | (noun) the act of distorting something so it seems to mean something it was not intended to mean | Synonyms: distortion, overrefinement, torture, twisting |
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| (noun) an intense or violent exertion | Synonyms: strain |
| strengthening | (noun) the act of increasing the strength of something | - |
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| (noun) becoming stronger | - |
| subjoining | (noun) the act of supplementing | Synonyms: subjunction, supplementation |
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| summoning | (noun) calling up supposed supernatural forces by spells and incantations | Synonyms: evocation |
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| sweetening | (noun) the act of adding a sweetener to food | - |
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| (noun) an improvement that makes something more agreeable | Synonyms: enhancement |
| (noun) something added to foods to make them taste sweeter | Synonyms: sweetener |
| tanning | (noun) making leather from rawhide | - |
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| (noun) beating with a whip or strap or rope as a form of punishment | Synonyms: flagellation, flogging, lashing, whipping |
| (noun) process in which skin pigmentation darkens as a result of exposure to ultraviolet light | - |
| thickening | (noun) the act of thickening | Synonyms: inspissation |
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| (noun) any thickened enlargement | Synonyms: knob, node |
| (noun) any material used to thicken | Synonyms: thickener |
| thinning | (noun) the act of diluting something | Synonyms: cutting |
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| tightening | (noun) the act of making something tighter | - |
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| tinning | (noun) the application of a protective layer of tin | Synonyms: tin-plating |
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| (noun) the application of a thin layer of soft solder to the ends of wires before soldering them | - |
| tobogganing | (noun) riding on a long light sled with low handrails | - |
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| training | (noun) activity leading to skilled behavior | Synonyms: grooming, preparation |
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| (noun) the result of good upbringing (especially knowledge of correct social behavior) | Synonyms: breeding, education |
| tuning | (noun) (music) calibrating something (an instrument or electronic circuit) to a standard frequency | - |
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| turning | (noun) the act of changing or reversing the direction of the course | Synonyms: turn |
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| (noun) act of changing in practice or custom | - |
| (noun) the activity of shaping something on a lathe | - |
| (noun) the end-product created by shaping something on a lathe | - |
| (noun) a movement in a new direction | Synonyms: turn |
| (noun) a shaving created when something is produced by turning it on a lathe | - |
| underreckoning | (noun) an estimation that is too low; an estimate that is less than the true or actual value | Synonyms: underestimate, underestimation, underrating |
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| unfastening | (noun) loosening the ties that fasten something | Synonyms: undoing, untying |
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| vacationing | (noun) the act of taking a vacation | - |
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| wakening | (noun) the act of waking | Synonyms: awakening, waking up |
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| waning | (noun) a gradual decrease in magnitude or extent | - |
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| warning | (noun) a message informing of danger | - |
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| (noun) cautionary advice about something imminent (especially imminent danger or other unpleasantness) | Synonyms: admonition, monition, word of advice |
| (noun) notification of something, usually in advance | - |
| weakening | (noun) the act of reducing the strength of something | - |
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| (noun) becoming weaker | - |
| weaning | (noun) the act of substituting other food for the mother's milk in the diet of a child or young mammal | Synonyms: ablactation |
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| whitening | (noun) changing to a lighter color | Synonyms: lightening |
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| widening | (noun) the act of making something wider | Synonyms: broadening |
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| (noun) a part of a road that has been widened to allow cars to pass or park | Synonyms: turnout |
| (noun) an increase in width | Synonyms: broadening |
| winning | (noun) succeeding with great difficulty | - |
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| winnings | (noun) something won (especially money) | Synonyms: profits, win |
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| woodgraining | (noun) a texture like that of wood | Synonyms: graining |
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| worsening | (noun) changing something with the result that it becomes worse | - |
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| (noun) process of changing to an inferior state | Synonyms: declension, decline in quality, deterioration |
| yawning | (noun) an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom | Synonyms: oscitance, oscitancy, yawn |
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| yearning | (noun) prolonged unfulfilled desire or need | Synonyms: hungriness, longing |
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| zoning | (noun) dividing an area into zones or sections reserved for different purposes such as residence and business and manufacturing etc | - |
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