Definition of corollary in English:

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Pronunciation: /ˈkôrəˌlerē/

noun (plural corollaries)

1A proposition that follows from (and is often appended to) one already proved.
Example sentences
  • For these angles, the contradiction used to prove the corollary does not arise.
  • The fan theorem is, in fact, a corollary of the bar theorem; combined with the continuity principle, which is not classically valid, it yields the continuity theorem.
  • As a corollary to this theorem Higman proved the existence of a universal finitely presented group containing every finitely presented group as a subgroup.
1.1A direct or natural consequence or result: the huge increases in unemployment were the corollary of expenditure cuts
More example sentences
  • One can say, there cannot be any second thought about the genuineness of their intention, which they consider a corollary to the remarkable quality and range of products showcased in the auditorium.
  • The corollary to these figures is that many businesses have trouble recruiting staff with the right level of skills.
  • This means that we, pedestrians, have as much of a right to the streets as the cars do (the corollary to this is that the cars occasionally come onto the sidewalks).
consequence, result, end result, upshot, effect, repercussion, product, by-product, offshoot


1Forming a proposition that follows from one already proved.
Example sentences
  • The British journal New Theatre Quarterly has even run a series of articles discussing the theatricality of the uncertainty principle and corollary axioms.
  • In support of this proposition, three corollary arguments are presented.
1.1Associated; supplementary.
Example sentences
  • A corollary question discussed by the committee was whether leadership development initiatives should be curricular or extracurricular in nature.
  • In addition, there are several more specific corollary conclusions to the main finding.
  • Her goal is to help women achieve healthy and long-lasting marriages, although the corollary implication is that women are responsible for failed relationships.


Late Middle English: from Latin corollarium 'money paid for a garland or chaplet; gratuity' (in late Latin 'deduction'), from corolla, diminutive of corona 'wreath, crown, chaplet'.

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