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circuit a usu. circular line or route around an enclosed area. [8 definitions]
circuit board a backing, panel, or card, often insulated, on which electronic circuits and other components are set or imprinted.
circuit breaker a switch or other device that automatically interrupts the electric current when a circuit is overloaded or extremely stressed in another way.
circuit court a court that can hold sessions in different locations in a judicial district. [2 definitions]
circuitous having or taking a long and winding course or procedure; roundabout; indirect.
circuit rider a clergyman who travels to preach in different parts of an area or district.
circuitry the plan or design of the elements in an electric circuit. [2 definitions]
circular relating to a circle. [5 definitions]
circular file (informal) a wastebasket.
circularize to send circulars to, or to advertise with circulars. [3 definitions]
circular saw a power saw featuring a disk-shaped blade that is rotated at high speed. [2 definitions]
circulate to move or flow continuously along a closed path or system. [4 definitions]
circulating library see lending library. [2 definitions]
circulation motion in a circle or along a circuit. [4 definitions]
circulatory system a system in the body made up of the heart, blood vessels, blood, and lymph vessels that carries blood and lymph around the body.
circum- about; around.
circumambient being or reaching all around; surrounding.
circumcise to remove the foreskin from the sex organ of (a male) or the clitoris or labia from the sex organ of (a female).
circumcision the act or ceremony of circumcising or, the fact of being circumcised.
circumference the outer boundary of a circle or other curvilinear figure or area; perimeter. [2 definitions]
circumflex one of several diacritic marks, especially ( ˆ ), placed over a vowel to indicate a certain sound or quality. [3 definitions]