| great-grandchild |
a child of one's grandson or granddaughter. |
| great-grandfather |
the grandfather of a person's mother or father. |
| great-grandmother |
the grandmother of a person's mother or father. |
| great-grandparent |
a parent of one's grandmother or grandfather. |
| Great Lakes |
five large, connected freshwater lakes of North America. They lie on the border between the United States and Canada; Lakes Superior, Michigan, Huron, Erie, and Ontario. |
| greatly |
very much. |
| Great Sandy Desert |
a very dry area of land in northwestern Australia. |
| Great Victoria Desert |
a very dry region in southwestern Australia. |
| Great Wall of China |
a defensive wall in northern China which stretches for thousands of miles. Parts of the wall were built as early as the seventh century BCE. These parts were connected to each other and more parts were added on later, especially in the fourteenth through seventeenth centuries CE. Millions of tourists come to see and walk on the Great Wall every year. |
| Greece |
a country in southern Europe on the Mediterranean Sea. Athens is the capital of Greece. |
| greed |
a great desire for more wealth and possessions than one needs or deserves. |
| greedy |
having a very strong desire for ever more money or things. [2 definitions] |
| Greek |
of or having to do with Greece, or its people, culture, or language. [3 definitions] |
| green |
the color of grass or of young, growing leaves; the color between yellow and blue on the color spectrum. [11 definitions] |
| greenhouse |
a building used to grow plants all year long. A greenhouse usually has a glass roof and walls. |
| greenhouse effect |
the warming of the earth's surface and lower atmosphere that is caused by reflected sunlight being trapped by certain gasses that are emitted on earth. Light from the sun travels through space and enters earth's atmosphere, naturally warming the planet and making it possible for humans to live on it. Once sunlight hits the earth, though, it bounces back into space. If it did not go back into space, the earth would be too hot to live on. Gases such as carbon dioxide and methane that are sent into the air from earth are capable of trapping sunlight that should return to space. The warmth created by the trapped sunlight is called the greenhouse effect. The greenhouse effect can be seen on other planets in the universe if gases emitted from the planet trap light from a star. |
| greenhouse gas |
any of the gases that are sent out from a planet that are capable of trapping sunlight in the planet's atmosphere, which causes the planet as a whole to become warmer. Carbon dioxide and methane are two of these gases. |
| Greenland |
the largest island in the world, located in the north Atlantic Ocean. Greenland is a part of North America. The island belongs to the country of Denmark, but recently it has gained the right to govern itself in some ways. Nuuk is the capital of Greenland. |
| green pepper |
a hollow, somewhat round, fruit that is eaten as a vegetable, especially in salads. The taste of a green pepper is not spicy. A green pepper is called that when the pepper is young and green. If the pepper is allowed to mature, it will become red. |
| green thumb |
a special skill to make plants grow well. |
| greet |
to speak to with friendly or polite words upon meeting or when starting a letter. [3 definitions] |