# circle

^{1}cir·cle

*noun*,

*often attributive*\ˈsər-kəl\

: a perfectly round shape : a line that is curved so that its ends meet and every point on the line is the same distance from the center

: a path that goes around a central point

: an arrangement of people or things that forms a circle

## Full Definition of *CIRCLE*

*archaic*

**:**the orbit of a celestial body

**:**something in the form of a circle or section of a circle: as

*a*

**:**diadem

*b*

**:**an instrument of astronomical observation the graduated limb of which consists of an entire circle

*c*

**:**a balcony or tier of seats in a theater

*d*

**:**a circle formed on the surface of a sphere by the intersection of a plane that passes through it <

*circle*of latitude>

*e*

**:**rotary 2

**:**an area of action or influence

**:**realm

**:**a group of persons sharing a common interest or revolving about a common center <the sewing

*circle*of her church> <family

*circle*> <the gossip of court

*circle*

*s*>

**:**a territorial or administrative division or district

**:**a curving side street

## Examples of *CIRCLE*

- She drew a
*circle*around the correct answer. - We formed a
*circle*around the campfire. - He looked old and tired, with dark
*circles*under his eyes. - She has a large
*circle*of friends. - She is well-known in banking
*circles*.

## Origin of *CIRCLE*

*cercle,*from Anglo-French, from Latin

*circulus,*diminutive of

*circus*circle, circus, from or akin to Greek

*krikos, kirkos*ring; akin to Old English

*hring*ring — more at ring

^{2}circle

*verb*

: to form a circle around (something)

: to draw a circle around (something)

: to move or go around (someone or something) in a circle

**cir·cled**

**cir·cling**\-k(ə-)liŋ\

## Full Definition of *CIRCLE*

**:**to enclose in or as if in a circle

**:**to move or revolve around <satellites

*circling*the earth>

*a*

**:**to move in or as if in a circle

*b*

**:**circulate

**:**to describe or extend in a circle

**cir·cler**\-k(ə-)lər\

*noun*

## Examples of *CIRCLE*

- He
*circled*his arms around his wife's waist. - His arms
*circled*around his wife's waist. - She
*circled*the correct answer. - The pilot
*circled*the airport before landing. - The halfback
*circled*to the left.

## First Known Use of *CIRCLE*

## cir·cle

*noun*\ˈsər-kəl\

*(Medical Dictionary)*

## Medical Definition of *CIRCLE *

*a*

**:**a closed plane curve every point of which is equidistant from a fixed point within the curve

*b*

**:**the plane surface bounded by such a curve

**:**something (as an anatomical part) in the form of a circle or section of a circle <an arterial

*circle*>—see circle of willis

## circle

*noun*

*(Concise Encyclopedia)*

Geometrical curve, one of the conic sections, consisting of the set of all points the same distance (the radius) from a given point (the centre). A line connecting any two points on a circle is called a chord, and a chord passing through the centre is called a diameter. The distance around a circle (the circumference) equals the length of a diameter multiplied by (*see* pi). The area of a circle is the square of the radius multiplied by . An arc consists of any part of a circle encompassed by an angle with its vertex at the centre (central angle). Its length is in the same proportion to the circumference as the central angle is to a full revolution.

## Learn More About *CIRCLE*

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