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Definition of grandfather noun from the Oxford Advanced Learner's Dictionary

grandfather

noun
 
/ˈɡrænfɑːðə(r)/
 
/ˈɡrænfɑːðər/
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  1. the father of your father or mother
    • The firm had been founded by his grandfather.
    see also grandad, grandaddy, grandpa compare grandmotherTopics Family and relationshipsa1
See grandfather in the Oxford Advanced American Dictionary
previously
adverb
 
 
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