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

ortho-

combining form
 
/ɔːθəʊ/,
 
/ɔːθə/,
 
/ɔːˈθɒ/
 
/ɔːrθəʊ/,
 
/ɔːrθə/,
 
/ɔːrˈθɑː/
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  1. (in nouns, adjectives and adverbs) correct; standard
    • orthodox
    • orthography
    Word Originfrom Greek orthos ‘straight, right’.
See ortho- in the Oxford Advanced American Dictionary
Check pronunciation: ortho-

Nearby words

trait
noun
 
 
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