| acrylamide | (noun) a white crystalline amide of propenoic acid can damage the nervous system and is carcinogenic in laboratory animals | - |
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| acrylate | (noun) a salt or ester of propenoic acid | Synonyms: propenoate |
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| acrylic | (noun) a synthetic fabric made from polyacrylonitrile | - |
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| (noun) used especially by artists | Synonyms: acrylic paint |
| (noun) a glassy thermoplastic; can be cast and molded or used in coatings and adhesives | Synonyms: acrylate resin, acrylic resin |
| (noun) polymerized from acrylonitrile | Synonyms: acrylic fiber |
| acrylonitrile | (noun) a colorless liquid unsaturated nitrile made from propene | Synonyms: propenonitrile, vinyl cyanide |
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| apocryphalness | (noun) The property of being of doubtful authenticity, of lacking authority, or of not being regarded as canonical. | - |
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| (noun) The property of being of dubious veracity; of questionable accuracy or truthfulness. | - |
| cry | (noun) a loud utterance; often in protest or opposition | Synonyms: call, outcry, shout, vociferation, yell |
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| (noun) a fit of weeping | - |
| (noun) a slogan used to rally support for a cause | Synonyms: battle cry, rallying cry, war cry, watchword |
| (noun) a loud utterance of emotion (especially when inarticulate) | Synonyms: yell |
| (noun) the characteristic utterance of an animal | - |
| cryaesthesia | (noun) hypersensitivity to cold | Synonyms: cryesthesia |
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| crybaby | (noun) a person given to excessive complaints and crying and whining | Synonyms: bellyacher, complainer, grumbler, moaner, sniveller, squawker, whiner |
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| (noun) a person who lacks confidence, is irresolute and wishy-washy | Synonyms: chicken, wimp |
| cryesthesia | (noun) hypersensitivity to cold | Synonyms: cryaesthesia |
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| crying | (noun) the process of shedding tears (usually accompanied by sobs or other inarticulate sounds) | Synonyms: tears, weeping |
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| cryoanaesthesia | (noun) insensibility resulting from cold | Synonyms: cryoanesthesia |
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| cryoanesthesia | (noun) insensibility resulting from cold | Synonyms: cryoanaesthesia |
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| cryobiology | (noun) the branch of biology that studies the effects of low temperatures on living tissues or organs or organisms | - |
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| cryocautery | (noun) application of a substance that destroys tissue by freezing it | - |
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| (noun) an instrument for destroying tissue by freezing it | - |
| cryogen | (noun) a liquid that boils at below -160 C and is used as a refrigerant | - |
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| cryogenics | (noun) the branch of physics that studies the phenomena that occur at very low temperatures | Synonyms: cryogeny |
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| cryogeny | (noun) the branch of physics that studies the phenomena that occur at very low temperatures | Synonyms: cryogenics |
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| cryolite | (noun) a white mineral consisting of fluorides of aluminum and sodium; a source of fluorine | Synonyms: Greenland spar |
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| cryometer | (noun) a thermometer designed to measure low temperatures | - |
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| cryonics | (noun) the freezing of a seriously ill or recently deceased person to stop tissues from decomposing; the body is preserved until new medical cures are developed that might bring the person back to life | - |
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| cryopathy | (noun) destruction of tissue by freezing and characterized by tingling, blistering and possibly gangrene | Synonyms: frostbite |
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| cryophobia | (noun) a morbid fear of freezing | - |
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| cryoscope | (noun) a measuring instrument for measuring freezing and melting points | - |
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| cryostat | (noun) a thermostat that operates at very low temperatures | - |
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| cryosurgery | (noun) the use of extreme cold (usually liquid nitrogen) to destroy unwanted tissue (warts or cataracts or skin cancers) | - |
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| crypt | (noun) a cellar or vault or underground burial chamber (especially beneath a church) | - |
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| cryptanalysis | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalytics, cryptography, cryptology |
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| cryptanalyst | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptographer, cryptologist |
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| cryptanalytics | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptography, cryptology |
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| cryptobiosis | (noun) a state in which an animal's metabolic activities come to a reversible standstill | - |
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| cryptococcosis | (noun) a fungal infection characterized by nodular lesions--first in the lungs and spreading to the nervous system | - |
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| cryptocoryne | (noun) any plant of the genus Cryptocoryne; evergreen perennials growing in fresh or brackish water; tropical Asia | Synonyms: water trumpet |
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| cryptocurrency | (noun) a currency based on the usage of cryptography to secure transactions | - |
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| cryptogam | (noun) formerly recognized taxonomic group including all flowerless and seedless plants that reproduce by means of spores: ferns, mosses, algae, fungi | - |
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| cryptogram | (noun) a piece of writing in code or cipher | Synonyms: cryptograph, secret writing |
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| cryptograph | (noun) a device for deciphering codes and ciphers | - |
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| (noun) a piece of writing in code or cipher | Synonyms: cryptogram, secret writing |
| (noun) a secret method of writing | Synonyms: cipher, cypher, secret code |
| cryptographer | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptologist |
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| cryptography | (noun) act of writing in code or cipher | Synonyms: coding, secret writing, steganography |
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| (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptanalytics, cryptology |
| cryptologist | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptographer |
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| cryptology | (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptanalytics, cryptography |
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| cryptomonad | (noun) common in fresh and salt water appearing along the shore as algal blooms | Synonyms: cryptophyte |
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| cryptophyte | (noun) common in fresh and salt water appearing along the shore as algal blooms | Synonyms: cryptomonad |
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| cryptorchidism | (noun) failure of one or both testes to move into the scrotum as the male fetus develops | Synonyms: cryptorchidy, cryptorchism |
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| cryptorchidy | (noun) failure of one or both testes to move into the scrotum as the male fetus develops | Synonyms: cryptorchidism, cryptorchism |
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| cryptorchism | (noun) failure of one or both testes to move into the scrotum as the male fetus develops | Synonyms: cryptorchidism, cryptorchidy |
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| crystal | (noun) a protective cover that protects the face of a watch | Synonyms: watch crystal, watch glass |
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| (noun) glassware made of quartz | - |
| (noun) a crystalline element used as a component in various electronic devices | - |
| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystallization |
| (noun) a solid formed by the solidification of a chemical and having a highly regular atomic structure | - |
| (noun) colorless glass made of almost pure silica | Synonyms: lechatelierite, quartz, quartz glass, vitreous silica |
| crystallinity | (noun) (chemistry) The degree of structural order in a solid. | - |
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| crystallisation | (noun) the formation of crystals | Synonyms: crystallization, crystallizing |
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| crystallite | (noun) any of numerous minute rudimentary crystalline bodies of unknown composition found in glassy igneous rock | - |
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| crystallization | (noun) a mental synthesis that becomes fixed or concrete by a process resembling crystal formation | - |
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| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystal |
| (noun) the formation of crystals | Synonyms: crystallisation, crystallizing |
| crystallizing | (noun) the formation of crystals | Synonyms: crystallisation, crystallization |
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| crystallogen | (noun) any chemical element that belongs to the carbon group. | Synonyms: carbon group element, Group 14 element, tetragen, tetrel |
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| crystallographer | (noun) a specialist in crystallography | - |
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| crystallography | (noun) the branch of science that studies the formation and structure of crystals | - |
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| dacryocyst | (noun) either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands | Synonyms: lacrimal sac, tear sac |
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| dacryocystitis | (noun) inflammation of the lacrimal sac causing obstruction of the tube draining tears into the nose | - |
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| dacryon | (noun) the craniometric point at the junction of the anterior border of the lacrimal bone with the frontal bone | - |
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| decryption | (noun) the activity of making clear or converting from code into plain text | Synonyms: decipherment, decoding |
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| encryption | (noun) the activity of converting data or information into code | Synonyms: encoding |
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| isocryme | (noun) a line connecting points on the earth's surface having the same mean temperature in the coldest month of the year. | - |
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| microcrystal | (noun) any crystal of microscopic size. | - |
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| mimicry | (noun) the act of mimicking; imitative behavior | Synonyms: apery |
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| (noun) the resemblance of an animal species to another species or to natural objects; provides concealment and protection from predators | - |
| outcry | (noun) a loud utterance; often in protest or opposition | Synonyms: call, cry, shout, vociferation, yell |
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