| calcaneus | (noun) the largest tarsal bone; forms the human heel | Synonyms: heelbone, os tarsi fibulare |
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| calcedony | (noun) a milky or greyish translucent to transparent quartz | Synonyms: chalcedony |
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| calceolaria | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: slipperwort |
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| calceus | (noun) a shoe covering the ankle; worn by ancient Romans | - |
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| calciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: cholecalciferol, D, ergocalciferol, viosterol, vitamin D |
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| calcification | (noun) a process that impregnates something with calcium (or calcium salts) | - |
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| (noun) tissue hardened by deposition of lime salts | - |
| (noun) an inflexible and unchanging state | - |
| calcimine | (noun) a water-base paint containing zinc oxide and glue and coloring; used as a wash for walls and ceilings | - |
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| calcination | (noun) the conversion of metals into their oxides as a result of heating to a high temperature | - |
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| calcite | (noun) a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone | - |
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| calcitonin | (noun) thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone | Synonyms: thyrocalcitonin |
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| calcium | (noun) a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals | Synonyms: atomic number 20, Ca |
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| calculability | (noun) The quality of being subject to or ascertainable by calculation. | - |
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| calculation | (noun) the procedure of calculating; determining something by mathematical or logical methods | Synonyms: computation, computing |
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| (noun) problem solving that involves numbers or quantities | Synonyms: computation, figuring, reckoning |
| (noun) planning something carefully and intentionally | Synonyms: deliberation |
| calculator | (noun) a small machine that is used for mathematical calculations; can be mechanical or electronic | Synonyms: calculating machine |
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| (noun) an expert at calculation (or at operating calculating machines) | Synonyms: computer, estimator, figurer, reckoner |
| calculus | (noun) the branch of mathematics that is concerned with limits and with the differentiation and integration of functions | Synonyms: infinitesimal calculus |
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| (noun) a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body | Synonyms: concretion |
| (noun) an incrustation that forms on the teeth and gums | Synonyms: tartar, tophus |
| cholecalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, D, ergocalciferol, viosterol, vitamin D |
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| decalcification | (noun) loss of calcium from bones or teeth | - |
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| decalcomania | (noun) the art of transferring designs from specially prepared paper to a wood or glass or metal surface | - |
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| (noun) either a design that is fixed to some surface or a paper bearing the design which is to be transferred to the surface | Synonyms: decal |
| dyscalculia | (noun) impaired ability to learn grade-appropriate mathematics | - |
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| ergocalciferol | (noun) a fat-soluble vitamin that prevents rickets | Synonyms: calciferol, cholecalciferol, D, viosterol, vitamin D |
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| hypercalcaemia | (noun) the presence of abnormally high levels of calcium in the blood; usually the result of excessive bone resorption in hyperparathyroidism or Paget's disease | Synonyms: hypercalcemia |
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| hypercalcemia | (noun) the presence of abnormally high levels of calcium in the blood; usually the result of excessive bone resorption in hyperparathyroidism or Paget's disease | Synonyms: hypercalcaemia |
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| hypercalcinuria | (noun) the presence of abnormally high levels of calcium in the urine; usually the result of excessive bone resorption in hyperparathyroidism or osteoporosis | Synonyms: hypercalciuria |
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| hypercalciuria | (noun) the presence of abnormally high levels of calcium in the urine; usually the result of excessive bone resorption in hyperparathyroidism or osteoporosis | Synonyms: hypercalcinuria |
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| hypocalcaemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcemia |
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| hypocalcemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcaemia |
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| minicalculator | (noun) (old-fashioned) a very small handheld calculator. | - |
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| miscalculation | (noun) a mistake in calculating | Synonyms: misestimation, misreckoning |
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| nephrocalcinosis | (noun) renal lithiasis in which calcium deposits form in the renal parenchyma and result in reduced kidney function and blood in the urine | - |
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| nitrocalcite | (noun) the mineral form of calcium nitrate | - |
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| precalc | (noun) a college-level algebra and trigonometry course that is designed to prepare students for the study of calculus | Synonyms: precalculus |
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| precalculus | (noun) a college-level algebra and trigonometry course that is designed to prepare students for the study of calculus | Synonyms: precalc |
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| recalcitrance | (noun) the trait of being unmanageable | Synonyms: recalcitrancy, refractoriness, unmanageableness |
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| recalcitrancy | (noun) the trait of being unmanageable | Synonyms: recalcitrance, refractoriness, unmanageableness |
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| recalculation | (noun) the act of calculating again (usually to eliminate errors or to include additional data) | - |
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| thyrocalcitonin | (noun) thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone | Synonyms: calcitonin |
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