| ancestor |
a person from whom one is descended and who lived several generations ago. |
| banish |
to cast out of a country by official action. |
| cruise |
to travel at the same speed for a while. |
| equality |
the condition of being the same in value, measure, or amount. |
| fluid |
a liquid or gas. A fluid flows easily and takes the shape of the container that holds it. Water and air are fluids. |
| gravity |
the force by which all objects in the universe are attracted to each other. |
| mammoth |
a very large extinct mammal closely related to elephants. Mammoths were much bigger than elephants, and had shaggy black fur and long tusks that curved upward. Several kinds of mammoths lived in the Northern Hemisphere until the end of the last Ice Age. |
| melodious |
having a pleasant melody. |
| mutant |
a life form whose genes are different from those of its parents. A mutant has new traits or characteristics that it can pass on to its offspring. |
| orphan |
a child whose parents have died. |
| quicken |
to make faster; accelerate. |
| sift |
to spread or sprinkle using a sieve or as though using a sieve. |
| soot |
a fine, black powder made during burning. Soot collects in chimneys or is carried into the air in smoke. |
| survival |
the act or fact of continuing to exist or be alive. |
| twilight |
the faint light in the sky when the sun is below the horizon before sunrise and after sunset. |