Subscriber login


Forgot your password?

Library card login

Other

contraposition

Syllabification: (con·tra·po·si·tion)
Pronunciation: /ˌkäntrəpəˈziSHən/
Definition of contraposition

noun

Logic
  • conversion of a proposition from all A is B to all not-B is not-A.

Derivatives

contrapositive

Pronunciation: /-ˈpäzətiv/
adjective & noun

Origin:

mid 16th century: from late Latin contrapositio(n-), from the verb contraponere, from contra- 'against' + ponere 'to place'

contraposition in other Oxford dictionaries

Definition of contraposition in the British & World English dictionary

Nearby words

  |  Cite

More words in this category

Oxford Dictionaries Pro

For Oxford's best resources for writers, plus thesaurus, audio, and 1.9m examples.

GET PRO ►

Shop for an Oxford dictionary
Find the perfect Oxford dictionary for you in our online shop.
SHOP NOW ►

Word of the day

monocular

/ məˈnɒkjʊlə /
adjective , noun
with, for, or in one eye …