chalaza | (noun) one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell | - |
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(noun) basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined | - |
chalazion | (noun) a small sebaceous cyst of the eyelid resulting when a Meibomian gland is blocked | Synonyms: Meibomian cyst |
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chalcanthite | (noun) hydrated blue crystalline form of copper sulfate | Synonyms: blue copperas, blue stone, blue vitriol |
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chalcedony | (noun) a milky or greyish translucent to transparent quartz | Synonyms: calcedony |
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chalcid | (noun) any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects | Synonyms: chalcid fly, chalcid wasp, chalcidfly |
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chalcidfly | (noun) any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects | Synonyms: chalcid, chalcid fly, chalcid wasp |
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chalcocite | (noun) a heavy grey mineral that is an ore of copper | Synonyms: copper glance |
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chalcopyrite | (noun) a yellow copper ore (CuFeS2) made up of copper and iron sulfide | Synonyms: copper pyrites |
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chaldron | (noun) a British imperial capacity measure (liquid or dry) equal to 36 bushels | - |
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chalet | (noun) a Swiss house with a sloping roof and wide eaves or a house built in this style | - |
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chalice | (noun) a bowl-shaped drinking vessel; especially the Eucharistic cup | Synonyms: goblet |
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chalk | (noun) a piece of calcite or a similar substance, usually in the shape of a crayon, that is used to write or draw on blackboards or other flat surfaces | - |
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(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: chicken feed, crank, deoxyephedrine, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash |
(noun) a pure flat white with little reflectance | - |
(noun) a soft whitish calcite | - |
chalkboard | (noun) sheet of slate; for writing with chalk | Synonyms: blackboard |
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chalkpit | (noun) a quarry for chalk | Synonyms: chalk pit |
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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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challah | (noun) (Judaism) a loaf of white bread containing eggs and leavened with yeast; often formed into braided loaves and glazed with eggs before baking | Synonyms: hallah |
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challenge | (noun) a call to engage in a contest or fight | - |
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(noun) questioning a statement and demanding an explanation | - |
(noun) a formal objection to the selection of a particular person as a juror | - |
(noun) a demand by a sentry for a password or identification | - |
(noun) a demanding or stimulating situation | - |
challenger | (noun) the contestant you hope to defeat | Synonyms: competition, competitor, contender, rival |
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challis | (noun) a soft lightweight fabric (usually printed) | - |
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chalybite | (noun) iron ore in the form of ferrous carbonate | Synonyms: siderite |
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