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Definition of proto- combining form from the Oxford Advanced Learner's Dictionary

proto-

combining form
 
/prəʊtəʊ/,
 
/prəʊtə/
 
/prəʊtəʊ/,
 
/prəʊtə/
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  1. (in nouns and adjectives) original; from which others develop
    • prototype
    • proto-modernist painters
    Word Originfrom Greek prōtos ‘first’.
See proto- in the Oxford Advanced American Dictionary
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Nearby words

perspective
noun
 
 
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