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Definition of hydr(o)- combining form from the Oxford Advanced Learner's Dictionary

hydr(o)-

combining form
 
/haɪdrəʊ/,
 
/haɪdrə/,
 
/haɪˈdrɒ/
 
/haɪdrəʊ/,
 
/haɪdrə/,
 
/haɪˈdrɑː/
in nouns, adjectives and adverbs
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  1. relating to water
    • hydroelectricity
  2. (chemistry) combined with hydrogen
    • hydrochloric acid
  3. Word Originfrom Greek hudōr ‘water’.
trait
noun
 
 
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