Prefixes are letters added to the beginning of words to form new words. The prefix tele, which comes from the Greek word for 'at a distance', is found in many words:
telephone
television
Suffixes are letters added to the end of words to form new words. The suffix phone comes from the Greek word for 'sound':
telephone
microphone
When you know the meaning of word roots, it enables you to understand the meaning of other words.
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