Definition of pregnant negative in English:

pregnant negative

noun

  • A negative proposition that is qualified in some way, so as to entail special logical treatment; (Law) = "negative pregnant".

Origin

Mid 19th century; earliest use found in Putnam's Monthly Magazine. After post-classical Latin propositio categorica negativa praegnans in Paulus Nicolettus Venetus, cited in C. Prantl Geschichte der Logik im Abendlande IV. 129, note 545; for Latin legal use see negative pregnant.