| annular ligament |
a ligament in the form of a circle, esp. around the ankle or wrist joint. |
| arctic |
(often capitalized) the region around the North Pole and inside the Arctic Circle. [1/3 definitions] |
| around |
in a circle. [3/11 definitions] |
| azimuth |
an arc measured horizontally and clockwise from a point north, in navigation, or a point south, in astronomy, to another point where a vertical circle intersects the horizon. [1/2 definitions] |
| ball bearing |
a machine part made of a groove in the shape of a circle with metal balls that roll in it. A ball bearing lets an axle or other part move easily. |
| belle |
a popular and admired woman, usu. young and often considered the most outstanding beauty at a social event or in a social circle. |
| bull's-eye |
the center of a round target, usually marked with a small circle. [1/2 definitions] |
| cabochon |
a polished gemstone, usu. in the form of a circle or ellipse, without facets. [1/2 definitions] |
| celestial equator |
a great circle, corresponding to the earth's equator, on the celestial sphere. |
| center of a circle |
the fixed point that is equidistant from all points that form a circle. |
| chord1 |
a line that connects two points on a circle. |
| circle |
anything that is shaped like a circle. [3/5 definitions] |
| circlet |
a little circle, esp. a narrow round band worn as an ornament for the head. |
| circular |
having the shape of a circle; round. [2 definitions] |
| circulation |
motion in a circle or along a circuit. [1/4 definitions] |
| circumcenter |
in geometry, the center of a circumscribed circle, which is a circle is that touches all the vertices of a polygon. |
| circumference |
the line that forms the outside edge of a circle or other round figure or area. [1/2 definitions] |
| closed chain |
a group of chemically linked atoms that can be represented in models and formulas as a ring or circle. |
| compass |
to go all the way around; circle. [1/9 definitions] |
| compass card |
a round card showing the points of the compass and degrees of a circle that is fitted within a compass case. |
| cone |
a solid figure with a flat base in the shape of a circle and one curved face that narrows into a point. [1/3 definitions] |