| Term | Definition |
| cataracts | strong rapids |
| delta | a triangle shape d area of land made of soil deposited by a river |
| pharoah | the title used by the rulers of Egypt. It means "great house" |
| dynasty | a series of rulers from the same family |
| Old Kingdom | a period in Egyptian history that lasted from about 2700 BC to 2200 BC |
| nobles | people from rich and powerful families |
| afterlife | life after death |
| mummies | speially treated bodies wrapped in cloth |
| elite | people with wealth and powerful |
| pyramids | huge stone tombs with four triangle-shaped walls that met in a point on top |
| engineering | the application of scientific knowledge for practical purposes |