| a2 |
used to introduce one particular thing or person of a group or kind, but one which is not considered known to the listener. [1/3 definitions] |
| able |
having the skill or power needed to do a thing. [1/2 definitions] |
| accommodation |
a change that has been made to adapt a thing to someone's needs. [1/2 definitions] |
| act |
a thing that is done; deed. [1/9 definitions] |
| activity |
a thing that people spend time doing. [1/2 definitions] |
| adaptation |
a particular change in the body of a living thing that helps the animal or plant to survive under new conditions. An adaptation happens over a very long time. [2/4 definitions] |
| admirer |
a person who has great appreciation for another person or thing. [1/2 definitions] |
| adversary |
a person, group, or thing that is against another; opponent; enemy. |
| age |
the length of time that a person or thing has existed. [1/8 definitions] |
| aid |
a person or thing that helps or assists. [1/3 definitions] |
| air |
the way a thing or person appears to be. [1/6 definitions] |
| altitude |
the height of a thing above earth or above sea level. |
| amoeba |
a tiny living thing made of only one cell. Amoebas move by changing their shape. They eat by wrapping their bodies around their food. Amoebas live in fresh and salt water, soil, and in animals. Most kinds of amoebas can only be seen through a microscope. |
| anatomy |
the parts of a living thing and how they fit together. [1/2 definitions] |
| anger |
a strong emotion brought on by a person or thing that causes one great pain or trouble. [1/3 definitions] |
| anything |
any thing, happening, or subject whatever. [2/3 definitions] |
| arrival |
a person or thing that has arrived. [1/2 definitions] |
| article |
a single thing; one item out of a group of similar objects. [1/4 definitions] |
| attachment |
a strong feeling of friendship or loyalty to a person, place, thing, or idea. [2/3 definitions] |
| attraction |
a thing or quality that attracts. [1/3 definitions] |
| auxiliary |
a person or thing that helps, assists, or supports. [1/3 definitions] |