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cardia the opening from the esophagus into the stomach.
cardiac of or pertaining to the heart. [3 definitions]
cardiac arrest the failure of the heart to pump blood; heart attack.
cardigan a soft, usu. knitted, collarless jacket or sweater that buttons or hangs open in the front.
cardinal in the Roman Catholic Church, an official appointed by the pope and second in rank to him. [4 definitions]
cardinalate the College of Cardinals in the Roman Catholic Church. [2 definitions]
cardinal flower a plant of eastern North America that grows in moist ground or shallow water. [2 definitions]
cardinal number any number used to express quantity but not order. (Cf. ordinal number.)
cardinal points the four main points of the compass; north, east, south, and west.
cardinal virtues the basic virtues in ancient Greek philosophy; justice, prudence, temperance, and fortitude.
card index a systematically arranged collection of cards bearing information of specified types, such as names and addresses; card file; card catalog.
cardio- heart.
cardiogram the curve drawn by an electrocardiograph in recording the mechanical movements of the heart, used in the diagnosis of heart defects and disease; electrocardiogram.
cardiograph an instrument used to detect and record the differences in bodily electric potential that are associated with the action of the heart; electrocardiograph.
cardiologist a medical doctor who specializes in the workings and diseases of the heart.
cardiology the medical study of the heart, its normal functioning, and its diseases.
cardiomyopathy chronic disease of the heart muscle.
cardiopulmonary of or pertaining to the heart and lungs.
cardiorespiratory of or pertaining to the heart and respiratory system.
cardiovascular of or pertaining to the heart and blood vessels.
cardioversion application of an electric shock to restore heartbeat.