obversion

n. 转向, 形成对立

词形变化

obversions 复数 obversions

释义与例句

n.
  1. 1.

    The act of turning toward or downward.

    可数 不可数
  2. 2.

    An immediate inference that denies the opposite of something previously affirmed.

    可数 不可数 数学 哲学

    All men are mortal, so, by obversion, no men are immortal.

词源

Latin obversio (“a turning towards”).

来源：wiktionary