From Middle English, from Late Latin corōllārium (money paid for a garland; gift, gratuity, something extra; consequence, deduction), from corōlla (small garland), diminutive of corōna (crown).



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corollary (plural corollaries)

  1. Something given beyond what is actually due; something added or superfluous.
  2. Something which occurs a fortiori, as a result of another effort without significant additional effort.
    Finally getting that cracked window fixed was a nice corollary of redoing the whole storefront.
  3. (mathematics, logic) A proposition which follows easily from the proof of another proposition.
    We have proven that this set is finite and well ordered; as a corollary, we now know that there is an order-preserving map from it to the natural numbers.


The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.


corollary (not comparable)

  1. Occurring as a natural consequence or result; attendant; consequential.
    • 2019, Li Huang; James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, DOI:10.1080/01434632.2019.1596115, page 11:
      However, given current sensibilities about individual privacy and data protection, the recording of oral data is becoming increasingly onerous for researchers who are obliged to navigate an often time-consuming and complex series of administrative requirements and corollary review processes in order to be granted ethics clearance.
  2. (rare) Forming a proposition that follows from one already proved.

Further readingEdit