| mirage |
an illusion in which something is seen in the distance but is not really there. A mirage often occurs in the desert or on hot pavement, creating the illusion of water. A mirage is caused when light is reflected by air masses of different temperatures. |
| new moon |
the phase of the moon when it cannot be seen because it passes directly between the sun and the earth. |
| object |
anything that has shape or form and can be seen or touched. [1/7 definitions] |
| observation |
the state of being seen or noticed. [1/3 definitions] |
| obvious |
easily seen or understood; clear. |
| paramecium |
a living thing made of one cell that lives in fresh water. Paramecia can only be seen through a microscope. Paramecia are protozoans, tiny organisms that are similar to animals. |
| perspective |
the way things are seen from a particular point of view. [1/3 definitions] |
| phase |
one of the stages of the moon or smaller planets as they change their relation to the sun. A phase is shown by how much of the moon's or planet's lighted area can be seen. [1/2 definitions] |
| phenomenon |
a happening or fact that can be seen or known through the senses. [1/2 definitions] |
| plain |
easily seen or heard; clear; visible. [1/6 definitions] |
| probe |
an instrument or tool used to explore the shape, condition, or depth of something that cannot be seen directly. [1/4 definitions] |
| rare1 |
not often found or seen; not common. [1/4 definitions] |
| ratio |
the relation between two numbers seen as the number of times the second number can be divided into the first. [1/2 definitions] |
| receiver |
a device that receives electronic signals and changes them into something that can be seen, heard, or understood. Televisions, telephones, and radios all work by using receivers. [1/3 definitions] |
| resent |
to feel anger or bitterness about or toward, especially when something is seen to be unfair. |
| root1 |
the part that attaches a hair, nail, or tooth to the body but cannot be seen. [1/9 definitions] |
| secret |
kept from being seen or known by others; private. [1/5 definitions] |
| section |
any part of a whole, or a part that can be seen as distinct in some way from the whole. [1/4 definitions] |
| sharp |
easily seen; clear. [1/10 definitions] |
| show |
to cause or allow to be seen. [1/10 definitions] |
| silhouette |
any dark figure seen against a light background, so that details are hard to see. [1/3 definitions] |