sub·con·trary /ˌsʌbˈkɑnˌtrɛri/
 (a.)小反對關係的小反對命題


 Sub·con·tra·ry a.
 1. Contrary in an inferior degree.
 2. Geom. Having, or being in, a contrary order; -- said of a section of an oblique cone having a circular base made by a plane not parallel to the base, but so inclined to the axis that the section is a circle; applied also to two similar triangles when so placed as to have a common angle at the vertex, the opposite sides not being parallel.
 3. 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.


 Sub·con·tra·ry, n.; pl. Subcontraries  Logic A subcontrary proposition; a proposition inferior or contrary in a lower degree.

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