| acetone | (noun) the simplest ketone; a highly flammable liquid widely used as an organic solvent and as material for making plastics | Synonyms: dimethyl ketone, propanone |
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| acetonemia | (noun) an abnormal increase of ketone bodies in the blood as in diabetes mellitus | Synonyms: ketonemia, ketosis |
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| atone | (verb) turn away from sin or do penitence | Synonyms: repent |
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| (verb) make amends for | Synonyms: aby, abye, expiate |
| atonement | (noun) the act of atoning for sin or wrongdoing (especially appeasing a deity) | Synonyms: expiation, propitiation |
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| (noun) compensation for a wrong | Synonyms: expiation, satisfaction |
| barbitone | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, diethylbarbituric acid, diethylmalonylurea, veronal |
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| baritone | (adjective) lower in range than tenor and higher than bass | - |
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| (noun) the second lowest brass wind instrument | Synonyms: baritone horn |
| (noun) the second lowest adult male singing voice | Synonyms: baritone voice |
| (noun) a male singer | Synonyms: barytone |
| barytone | (noun) a male singer | Synonyms: baritone |
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| bilestone | (noun) a calculus formed in the gall bladder or its ducts | Synonyms: gallstone |
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| bloodstone | (noun) green chalcedony with red spots that resemble blood | Synonyms: heliotrope |
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| bluestone | (noun) bluish-grey sandstone used for paving and building | - |
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| botonee | (adjective) (of a heraldic cross) having a cluster of three buttons or knobs at the end of each arm | Synonyms: botonnee |
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| breakstone | (noun) any of various plants of the genus Saxifraga | Synonyms: rockfoil, saxifrage |
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| brimstone | (noun) an old name for sulfur | Synonyms: native sulfur, native sulphur |
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| brownstone | (noun) a row house built of brownstone; reddish brown in color | - |
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| (noun) a reddish brown sandstone; used in buildings | - |
| buttoned | (adjective) furnished or closed with buttons or something buttonlike | Synonyms: fastened |
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| capstone | (noun) a stone that forms the top of wall or building | Synonyms: copestone, coping stone, stretcher |
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| (noun) a final touch; a crowning achievement; a culmination | Synonyms: copestone, finishing touch |
| chalkstone | (noun) a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout | Synonyms: tophus |
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| cherrystone | (noun) a half-grown quahog | Synonyms: cherrystone clam |
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| (noun) small quahog larger than a littleneck; eaten raw or cooked as in e.g. clams casino | Synonyms: cherrystone clam |
| claystone | (noun) fine-grained rock consisting of compacted clay particles | - |
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| clingstone | (noun) fruit (especially peach) whose flesh adheres strongly to the pit | Synonyms: cling |
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| cobblestone | (noun) rectangular paving stone with curved top; once used to make roads | Synonyms: cobble, sett |
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| (verb) pave with cobblestones | Synonyms: cobble |
| copestone | (noun) a stone that forms the top of wall or building | Synonyms: capstone, coping stone, stretcher |
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| (noun) a final touch; a crowning achievement; a culmination | Synonyms: capstone, finishing touch |
| cornerstone | (noun) a stone at the outer corner of two intersecting masonry walls | - |
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| (noun) a stone in the exterior of a large and important building; usually carved with a date and laid with appropriate ceremonies | - |
| (noun) the fundamental assumptions from which something is begun or developed or calculated or explained | Synonyms: base, basis, foundation, fundament, groundwork |
| cotoneaster | (noun) any shrub of the genus Cotoneaster: erect or creeping shrubs having richly colored autumn foliage and many small white to pinkish flowers followed by tiny red or black fruits | - |
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| curbstone | (noun) a paving stone forming part of a curb | Synonyms: kerbstone |
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| dripstone | (noun) a protective drip that is made of stone | Synonyms: hoodmold, hoodmould |
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| (noun) the form of calcium carbonate found in stalactites and stalagmites | - |
| fieldstone | (noun) stone that occurs naturally in fields; often used as building material | - |
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| firestone | (noun) a sandstone that withstands intense heat; used to line fireplaces and furnaces and kilns | - |
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| (noun) a piece of flint that is struck to light a fire | - |
| flagstone | (noun) stratified stone that splits into pieces suitable as paving stones | Synonyms: flag |
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| flintstone | (noun) pebbles of flint used in masonry construction | - |
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| freestone | (noun) fruit (especially peach) whose flesh does not adhere to the pit | - |
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| gallstone | (noun) a calculus formed in the gall bladder or its ducts | Synonyms: bilestone |
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| gemstone | (noun) a crystalline rock that can be cut and polished for jewelry | Synonyms: gem, stone |
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| goldstone | (noun) aventurine spangled densely with fine gold-colored particles | - |
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| gravestone | (noun) a stone that is used to mark a grave | Synonyms: headstone, tombstone |
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| grindstone | (noun) a revolving stone shaped like a disk; used to grind or sharpen or polish edge tools | - |
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| gritstone | (noun) a hard coarse-grained siliceous sandstone | Synonyms: grit, gritrock |
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| hailstone | (noun) small pellet of ice that falls during a hailstorm | - |
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| halftone | (noun) an engraving used to reproduce an illustration | Synonyms: halftone engraving, photoengraving |
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| (noun) a print obtained from photoengraving | - |
| headstone | (noun) the central building block at the top of an arch or vault | Synonyms: key, keystone |
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| (noun) a stone that is used to mark a grave | Synonyms: gravestone, tombstone |
| hearthstone | (noun) a stone that forms a hearth | - |
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| histone | (noun) a simple protein containing mainly basic amino acids; present in cell nuclei in association with nucleic acids | - |
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| holystone | (noun) a soft sandstone used for scrubbing the decks of a ship | - |
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| (verb) scrub with a holystone | - |
| hornstone | (noun) a fine-grained metamorphic rock formed by the action of heat on clay rocks | Synonyms: hornfels |
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| intone | (verb) recite with musical intonation; recite as a chant or a psalm | Synonyms: cantillate, chant, intonate |
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| (verb) speak carefully, as with rising and falling pitch or in a particular tone | Synonyms: intonate |
| (verb) utter monotonously and repetitively and rhythmically | Synonyms: chant, tone |
| intoned | (adjective) uttered in a monotonous cadence or rhythm as in chanting | Synonyms: chantlike, singsong |
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| jackstones | (noun) a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball | Synonyms: jacks, knucklebones |
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| (noun) game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks | Synonyms: jack |
| jadestone | (noun) a semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite | Synonyms: jade |
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| kerbstone | (noun) a paving stone forming part of a curb | Synonyms: curbstone |
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| ketone | (noun) any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals | - |
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| ketonemia | (noun) an abnormal increase of ketone bodies in the blood as in diabetes mellitus | Synonyms: acetonemia, ketosis |
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| keystone | (noun) the central building block at the top of an arch or vault | Synonyms: headstone, key |
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| (noun) a central cohesive source of support and stability | Synonyms: anchor, backbone, linchpin, lynchpin, mainstay |
| lactone | (noun) a cyclic intramolecular ester derived from a hydroxy acid. | - |
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| limestone | (noun) a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals | - |
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| loadstone | (noun) a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically | Synonyms: lodestone |
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| lodestone | (noun) a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically | Synonyms: loadstone |
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| marlstone | (noun) metamorphic rock with approximately the same composition as marl | Synonyms: marlite |
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| mearstone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: meerestone, merestone |
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| meerestone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: mearstone, merestone |
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| merestone | (noun) an old term for a landmark that consisted of a pile of stones surmounted by an upright slab | Synonyms: mearstone, meerestone |
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| mifepristone | (noun) an abortion-inducing drug (trade name RU 486) developed in France; when taken during the first five weeks of pregnancy it blocks the action of progesterone so that the uterus sloughs off the embryo | Synonyms: abortion pill, RU 486 |
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| milestone | (noun) stone post at side of a road to show distances | Synonyms: milepost |
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| (noun) a significant event in your life (or in a project) | - |
| millstone | (noun) one of a pair of heavy flat disk-shaped stones that are rotated against one another to grind the grain | - |
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| (noun) any load that is difficult to carry | - |
| (noun) (figurative) something that hinders or handicaps | Synonyms: albatross |
| monotone | (adjective) of a sequence or function; consistently increasing and never decreasing or consistently decreasing and never increasing in value | Synonyms: monotonic |
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| (adjective) sounded or spoken in a tone unvarying in pitch | Synonyms: flat, monotonic, monotonous |
| (noun) an unchanging intonation | Synonyms: drone, droning |
| (noun) a single tone repeated with different words or different rhythms (especially in rendering liturgical texts) | - |
| moonstone | (noun) a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar | - |
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| mosstone | (adjective) of a moderate somewhat dull yellow-green color | Synonyms: moss green |
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| motoneuron | (noun) a neuron conducting impulses outwards from the brain or spinal cord | Synonyms: efferent neuron, motor nerve fiber, motor neuron |
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| nabumetone | (noun) a nonsteroidal anti-inflammatory drug (trade name Relafen) | Synonyms: Relafen |
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| oilstone | (noun) a whetstone for use with oil | - |
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| overtone | (noun) a harmonic with a frequency that is a multiple of the fundamental frequency | Synonyms: partial, partial tone |
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| (noun) (usually plural) an ulterior implicit meaning or quality | - |
| oxytone | (noun) word having stress or an acute accent on the last syllable | - |
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| paroxytone | (noun) word having stress or acute accent on the next to last syllable | - |
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| pentatone | (noun) a gapped scale with five notes; usually the fourth and seventh notes of the diatonic scale are omitted | Synonyms: pentatonic scale |
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| peptone | (noun) any of various water-soluble compounds that form by hydrolysis in the digestion of proteins to amino acids | - |
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| peritoneal | (adjective) of or relating to or affecting the peritoneum | - |
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| peritoneum | (noun) a transparent membrane that lines the abdominal cavity in mammals and covers most of the viscera | - |
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| phenobarbitone | (noun) a long-acting barbiturate used as a sedative | Synonyms: Luminal, phenobarbital, purple heart, sodium thiopental |
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| pitchstone | (noun) dark acid granitic glass | - |
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| proparoxytone | (noun) word having stress or acute accent on the antepenult | - |
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| rhinestone | (noun) an imitation diamond made from rock crystal or glass or paste | - |
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| rottenstone | (noun) a weathered and decomposed siliceous limestone; in powdered form it is used in polishing | Synonyms: tripoli |
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| sandstone | (noun) a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.) | - |
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| semitone | (noun) the musical interval between adjacent keys on a keyboard instrument | Synonyms: half step |
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| siltstone | (noun) a fine-grained sandstone of consolidated silt | - |
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| soapstone | (noun) a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments | Synonyms: soap-rock, soaprock, steatite |
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| spironolactone | (noun) a synthetic corticosteroid (trade name Aldactone) used to treat hypertension | Synonyms: Aldactone |
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| stone | (adjective) of any of various dull tannish or grey colors | - |
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| (noun) building material consisting of a piece of rock hewn in a definite shape for a special purpose | - |
| (noun) a lack of feeling or expression or movement | - |
| (noun) a lump or mass of hard consolidated mineral matter | Synonyms: rock |
| (noun) the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed | Synonyms: endocarp, pit |
| (noun) an avoirdupois unit used to measure the weight of a human body; equal to 14 pounds | - |
| (noun) material consisting of the aggregate of minerals like those making up the Earth's crust | Synonyms: rock |
| (noun) a crystalline rock that can be cut and polished for jewelry | Synonyms: gem, gemstone |
| (verb) remove the pits from | Synonyms: pit |
| (verb) kill by throwing stones at | Synonyms: lapidate |
| stonechat | (noun) common European chat with black plumage and a reddish-brown breast | Synonyms: Saxicola torquata |
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| stonecress | (noun) any Old World herb of the genus Aethionema; native of sunny limestone habitats | Synonyms: stone cress |
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| stonecrop | (noun) any of various northern temperate plants of the genus Sedum having fleshy leaves and red or yellow or white flowers | - |
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| stonecutter | (noun) someone who cuts or carves stone | Synonyms: cutter |
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| stoned | (adjective) under the influence of narcotics, especially cannabis | Synonyms: hopped-up |
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| stoneface | (noun) any plant of the genus Lithops native to Africa having solitary yellow or white flowers and thick leaves that resemble stones | Synonyms: flowering stone, lithops, living stone, stone-face, stone life face, stone plant |
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| stonefish | (noun) venomous tropical marine fish resembling a piece of rock | Synonyms: Synanceja verrucosa |
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| stonefly | (noun) primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones | Synonyms: plecopteran, stone fly |
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| stoneless | (adjective) (of fruits having stones) having the stone removed | - |
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| stonelike | (adjective) (of bone especially the temporal bone) resembling stone in hardness | Synonyms: petrous |
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| stonemason | (noun) a craftsman who works with stone or brick | Synonyms: mason |
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| stoner | (noun) an attacker who pelts the victim with stones (especially with intent to kill) | Synonyms: lapidator |
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| stoneroot | (noun) erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States | Synonyms: Collinsonia canadensis, horse balm, horseweed, richweed, stone-root, stone root |
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