circ- +

Used before a date to indicate that it is approximate or that it is an estimated date; abbreviated as: ca, ca., c., c, cir., circ.

Designating physiological activity that occurs approximately every twenty-four hours, or the rhythm of such activity.

1. A two-dimensional geometric figure formed with a curved line surrounding a center point, every point of the line being an equal distance from the center point.
2. A circular course, circuit, or orbit: a satellite's circle around the earth.
3. A curved section or tier of seats in a theater.
4. A process, series, or process that finishes at its starting point or continuously repeats itself; a cycle.
5. A group of people sharing a common interest, profession, activity, social background, or achievement: well-known in artistic circles.
6. A territorial or administrative division, especially of a province, in some European countries.

1. Surrounded; encompassed; inclosed.
2. Having the form of a circle; round.

1. A decorated metal band worn around the head.
2. A small circle; especially, a circular ornament.

1. To make or to form a circle; to enclose.
2. To move around in a circle.

1. Being or taking a roundabout, lengthy course.
2. Roundabout; not direct; such as, a circuitous route; a circuitous argument.
3. Marked by obliqueness or indirection in speech or conduct.
4. Deviating from a straight course; "Her father took a circuitous route to avoid the rush-hour traffic."

1. Relating to a circle.
2. Shaped like or nearly like a circle; round.
3. Moving in or forming a circle.
4. Circuitous; roundabout: "We took a circular route to work."
5. Using a premise to prove a conclusion that in turn is used to prove the premise: "He was making a circular argument."
6. Defining one word in terms of another that is itself defined in terms of the first word.
7. Addressed or distributed to a large number of people.

1. The roundness of a two-dimensional figure.
2. The quality or fact of being circular in shape.
3. The indirect and complicated nature of something; such as, a method or route.
4. The illogical nature of something; such as, an argument or piece of reasoning.

Circulating printed notices as a means of advertising.

1. To publicize with circulars.
2. To canvass or to take a poll using a questionnaire.

1. Anyone who publicizes with circulars.
2. Someone who canvasses or takes a poll using a questionnaire.

1. To move in a circle or to circuit; to move or to pass through a circuit back to the starting point: "Blood circulates throughout the body."
2. To pass from place to place, from person to person, etc.
3. To be distributed or sold; especially, over a wide area.
4. In libraries, a reference to books and other materials which are available for borrowing by people from a library for a specified period of time.
5. To cause to pass from place to place, person to person, etc.; to disseminate; to distribute: "He just kept on circulating the rumor."

1. Something that is moved freely through a circuit or which has followed a circular route.
2. Distributed or passed from person to person or from place to place.