secretor

noun
se·​cre·​tor | \si-ˈkrē-tər \

Definition of secretor 

: an individual of blood group A, B, or AB who secretes the antigens characteristic of these blood groups in bodily fluids (such as saliva)

First Known Use of secretor

1941, in the meaning defined above

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The first known use of secretor was in 1941

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secretor

noun
se·​cre·​tor | \si-ˈkrēt-ər \

Medical Definition of secretor 

: an individual of blood group A, B, or AB who secretes the antigens characteristic of these blood groups in bodily fluids (as saliva)

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