Summary: Prefixes are key morphemes in English vocabulary that begin words. The origin of the prefix *micro-* is an ancient Greek word which meant "small." This prefix appears in no "small" number of English vocabulary words; [*micro*]phone, [*micro*]wave, and [*micro*]manager are a few noteworthy examples. An easy way to remember that the prefix *micro-* means "small" is through the word [*micro*]scope, an instrument which allows the viewer to see "small" living things.
