What is denoting the relation of opposition between the particular affirmative and particular negative. Of these both may be true and only one can be false called?

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Accepted Answer

subcontrary — (Logic) Denoting the relation of opposition between the particular affirmative and particular negative. Of these both may be true and only one can be false. (Webster's 1913.)

What is denoting the relation of opposition between the particular affirmative and particular negative. Of these both may be true and only one can be false called?

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