| aggressive |
mean and unfriendly in one's actions; ready to argue or start fights. |
| breadth |
the distance measured from one side to the other side of something; width. |
| census |
an official count of the people who live in a country or other area. A census is also used to collect information about these people, such as their job, age, or sex. |
| despondent |
low in spirits; unhappy, depressed, or dejected. |
| enhance |
to improve or add to the quality, value, or attractiveness of. |
| helm |
a wheel or lever used for steering a ship. |
| herald |
a person who conveys or announces official news; messenger. |
| hypothesis |
a prediction or educated guess that can be tested and can be used to guide further study. |
| medieval |
of, or having to do with the Middle Ages. |
| passive |
receiving an action without acting in return, or not responding to something that might affect one. |
| portfolio |
a collection of unbound papers or other printed material, often constituting a sample of one's professional work, intended to be shown to others and transported from place to place in a specially designed case. |
| selfless |
having or showing an unselfish lack of concern for oneself and one's interests. |
| similarity |
the state or quality of being similar; resemblance. |
| spectrum |
a band of colors that is formed when light is passed through a prism, or in some other way. The six colors of a spectrum are red, orange, yellow, green, blue, and purple. |
| toxin |
any poisonous substance that is produced by living cells or living organisms. |