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co-tutor
co-tutor n. 
/ˌkəʊˈtʃuːtə/,
Brit. /ˌkəʊˈtjuːtə/
, /ˌkəʊˈtjuːtə//ˌkəʊˈtʃuːtə/U.S. /ˌkoʊˈt(j)udər/
/ˌkoʊˈt(j)udər/Π
1833 W. Hamilton in Edinb. Rev. July 518 A special tutor or co-tutor is assigned to watch over the education of the children.
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