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| Term | Definition |
|---|---|
| photograph | a picture made by a camera |
| phonics | the study of the sounds of the letters of the alphabet |
| phonograph | a record player or a machine that reproduces sound |
| photosynthesis | the process in which green plants use sunlight to make their own food |
| photocopy | something that is made to look exactly like something else |
| photojournalist | a reporter who uses photos to tell a story |
| television | a device to receive pictures from afar |
| barometer | An instrument that measures atmospheric pressure |
| teleconference | meeting that uses phones and video for people who are in different places |
| autograph | a person's own signature |
| perimeter | The distance around a figure |
| symphony | a long piece of music to be played by an orchestra |
| telegraph | a device that used electric signals to send messages |
| telephoto | a lens for a camera that makes far away objects appear to be closer |
| micrometer | one millionth of a meter |
| graphic | a picture, map, or graph used for illustration |
| xylophone | an instrument of wooden bars that makes a ringing sound when struck |
| telethon | a telephone fund raiser which runs on non-stop |
| telecommunication | communication by electronic means |
| telescope | A device built to observe distant objects by making them appear closer |
| thermometer | a tool used to measure temperature |
| centimeter | one hundredth of a meter |
| biography | A written account of another person's life. |