DictionaryRoot: mikros
Greek
mikros
small
Forms
- mikros
- micro- — The common form in English compounds.
Origin
An old Greek word whose deeper origin is uncertain.
Note
Scientific use later assigned micro- the precise value of one millionth in measurement names.
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noun
omicron
AH-muh-krahn/ˈɑːməkrɑːn/
The fifteenth letter of the Greek alphabet.
Etymology
The name means “small o,” referring to the vowel’s short duration in ancient Greek. It contrasts with omega, “big o,” which represented a long vowel.