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 History of this Word

"opto" is from "optos" (seen/visible) spoken by people of Greece starting about 1000 B.C.


In this sense, it is a word added to another word to form a new word.

Words related to this meaning

grammar is modifier

"opto-" is a type of prefix


A prefix added to the start of a word. Indicates that "eye" or "vision" modifies the word. Created to expand meanings. Can be used with many words to form new words.

Examples of how the word is used

opto- illustration The Optometrist examines eyes for the presence or absence of defects or visual anomalies that can be corrected.
opto- illustration These pages demonstrate visual phenomena and optical illusions.