| Aurora |
bands or streamers of light that appear in the sky at night in areas around the magnetic poles, caused by solar particles striking atoms in the outer part of the earth's atmosphere. |
| blueprint |
a print of a drawing that shows a building plan. Blueprints usually have white lines on a blue background. |
| breakthrough |
an important discovery in a particular field that encourages an acceleration in knowledge or expertise. |
| consist |
to be made up or formed (usually followed by "of"). |
| cultivate |
to make fit for growing plants by plowing, weeding, or adding fertilizer. |
| disdain |
an attitude or display of contempt; scorn. |
| escalate |
to increase in intensity, scope, or size. |
| firsthand |
from the source; directly. |
| hierarchy |
a body of persons or entities graded according to rank or level of authority. |
| imaginable |
possible to picture or conceive. |
| inactive |
not moving or operating; inert; quiescent. |
| ponder |
to think about something deeply and carefully. |
| reject |
to refuse to take, approve, or believe. |
| shrewd |
clever and careful. |
| torrent |
a heavy flow of water with a strong current, such as a rushing stream, a flood, or a heavy rainfall. |