falsum

Borrowed from Latin falsum.

falsum (uncountable)

1. (logic) An arbitrary contradiction, denoted ⊥.

From falsus, perfect passive participle of fallō (“deceive, trick”).

• (Classical Latin) IPA^(key): [ˈfaɫ.sũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈfal.sum]

falsum n (genitive falsī); second declension

1. An untruth, falsehood, fraud, deceit, lie; forgery.

   Ex falso quodlibet.^(WP)

   From falsehood anything [follows]: ${\displaystyle \bot \rightarrow Q}$.

Second-declension noun (neuter).

• “falsum”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• falsum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• Carl Meißner, Henry William Auden (1894) Latin Phrase-Book‎^[1], London: Macmillan and Co.
  • to distinguish true and false: vera et falsa (a falsis) diiudicare
    
  • to be misled by a vain hope: inani, falsa spe duci, induci
    
  • to tell lies: falsa (pro veris) dicere
    
• “falsum”, in Harry Thurston Peck, editor (1898), Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers
• “falsum”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin