calcium-cyanamide

a compound used as a fertilizer and as a source of nitrogen compounds ;

calcium bicarbonate

a bicarbonate that is a major cause of hard water ;

calcium blocker

any of a class of drugs that block the flow of the electrolyte calcium (either in nerve cell conduction or smooth muscle contraction of the heart); has been used in the treatment of angina or arrhythmia or hypertension or migraine ;

calcium carbide

a grey salt of calcium (CaC) used in making acetylene ;

calcium carbonate

a salt found in nature as chalk or calcite or aragonite or limestone ;

calcium chloride

a deliquescent salt; used in de-icing and as a drying agent ;

calcium hydrate

a caustic substance produced by heating limestone ;

calcium hydride

a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen ;

calcium hydroxide

a caustic substance produced by heating limestone ;

calcium hypochlorite

any hypochlorite of calcium; used as a bleaching agent ;

calcium ion

ion of calcium; a factor in the clotting of blood ;

calcium lactate

a white crystalline salt made by the action of lactic acid on calcium carbonate; used in foods (as a baking powder) and given medically as a source of calcium ;

calcium light

a lamp consisting of a flame directed at a cylinder of lime with a lens to concentrate the light; formerly used for stage lighting ;

calcium nitrate

a deliquescent salt that is soluble in water; sometimes used as a source of nitrogen in fertilizers ;

calcium octadecanoate

an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water ;

calcium oxide

a white crystalline oxide used in the production of calcium hydroxide ;

calcium phosphate

a phosphate of calcium; a main constituent of animal bones ;

calcium stearate

an insoluble calcium salt of stearic acid and palmitic acid; it is formed when soap is mixed with water that contains calcium ions and is the scum produced in regions of hard water ;

calcium sulfate

a white salt (CaSO4) ;

calcium sulphate

a white salt (CaSO4) ;

calculating machine

a small machine that is used for mathematical calculations ;

calculation

the procedure of calculating; determining something by mathematical or logical methods ; planning something carefully and intentionally; "it was the deliberation of his act that was insulting" ; problem solving that involves numbers or quantities ;

calculator

a small machine that is used for mathematical calculations ; an expert at calculation (or at operating calculating machines) ;

calculus

the branch of mathematics that is concerned with limits and with the differentiation and integration of functions ; a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body; "renal calculi can be very painful" ; an incrustation that forms on the teeth and gums ;

calculus of variations

the calculus of maxima and minima of definite integrals ;

calcutta

the largest city in India and one of the largest cities in the world; located in eastern India; suffers from poverty and overcrowding ;

calder

United States sculptor who first created mobiles and stabiles (1898-1976) ;

caldera

a large crater caused by the violent explosion of a volcano that collapses into a depression ;

calderon

Spanish poet and dramatist considered one of the great Spanish writers (1600-1681) ;

calderon de la barca

Spanish poet and dramatist considered one of the great Spanish writers (1600-1681) ;

caldron

a very large pot that is used for boiling ;

caldwell

United States author remembered for novels about poverty and degeneration (1903-1987) ;

calean

an oriental tobacco pipe with a long flexible tube connected to a container where the smoke is cooled by passing through water; "a bipolar world with the hookah and Turkish coffee versus hamburgers and Coca Cola" ;

caleche

the folding hood of a horse-drawn carriage ; a woman's large folded hooped hood; worn in the 18th century ;

caledonia

the geographical area (in Roman times) north of the Antonine Wall; now a poetic name for Scotland ;

caledonian canal

a canal in northern Scotland that links North Sea with the Atlantic Ocean; runs diagonally between Moray Firth at the northeastern end and Loch Linnhe at the southwestern end; now little used ;

calefaction

the property of being warming ;

calendar

a list or register of events (appointments or social events or court cases etc); "I have you on my calendar for next Monday" ; a tabular array of the days (usually for one year) ; a system of timekeeping that defines the beginning and length and divisions of the year ;

calendar day

a day reckoned from midnight to midnight ;

calendar method

natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle) ;