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Definition of birth father noun from the Oxford Advanced Learner's Dictionary

birth father

noun
 
/ˈbɜːθ fɑːðə(r)/
 
/ˈbɜːrθ fɑːðər/
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  1. the biological father of a child who has been adoptedTopics Family and relationshipsc1, Life stagesc1
trait
noun
 
 
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