| dial |
A dial is a flat, round thing that is part of some older telephones. These telephones have numbers on the front of them arranged in a circle. The dial is attached to the front of the phone but has holes in it--one over each number. You put your finger in a hole over a number and move the dial around to select that number. When you've finished selecting each of the numbers you want, your call can go through. [1/4 definitions] |
| diameter |
a straight line from one side of a circle or sphere to the other that passes through the center. [2/3 definitions] |
| ellipse |
a shape that looks like a flattened circle; oval. |
| encircle |
to form a circle around; surround. |
| equator |
the imaginary circle around the earth that is halfway between the North and South Poles. The equator is represented by a line that goes around the middle of a globe. |
| full moon |
the moon when it is on the side of Earth that is opposite the sun and looks from Earth like a complete circle. [1/2 definitions] |
| graph |
a diagram that shows a relationship between two or more changing things by lines, bars, dots, or portions of a circle. [1/2 definitions] |
| halo |
a circle of light shining around the head of a god, an angel, or a saint in a picture. [2 definitions] |
| hoop |
Things that have the shape of a circle are often called "hoops." [1/3 definitions] |
| hurricane |
a powerful storm with heavy rains and winds that blow in a circle at 73 miles per hour or more. Hurricanes form in the West Indian region of the Atlantic Ocean or in the eastern part of the Pacific Ocean near Mexico and Central America. |
| iris |
the colored circle around the pupil of the eye. [1/2 definitions] |
| lip |
either of the upper or lower edges of flesh that circle the mouth and are used in speech. [1/3 definitions] |
| loop |
the rounded shape made when a piece of string, ribbon, or rope is crossed back over itself or tied so that it forms a circle. [1/5 definitions] |
| meridian |
an imaginary circle around the earth that passes through the North and the South Pole, or either half of such a circle from one pole to the other. [1/2 definitions] |
| merry-go-round |
A merry-go-round is a piece of play equipment in a park. It's a round platform that turns around in a circle when it is pushed. Some kids sit or stand on the platform while others run around the outside and push to make it go around. The harder kids push, the faster the merry-go-round will go. [1/2 definitions] |
| moon |
A moon is any very large, natural object that goes around a planet in a circle. Our Earth has only one moon, but some planets have many moons. [1/2 definitions] |
| orbit |
to move in a circle around. [1/3 definitions] |
| parallel |
any of the imaginary lines that circle the earth in the same direction as the equator. Parallels mark degrees of latitude. [1/5 definitions] |
| pi |
a number equal to the ratio of the circumference of a circle to its diameter. The value of pi is approximately 3.1416 or 22/7. |
| radius |
a straight line from the center to the edge of a circle or sphere. [1/2 definitions] |
| revolve |
to turn or spin in place. [2/3 definitions] |