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From Middle English, from Late Latin corōllārium (“deduction, consequence, originally money paid for a garland, hence gift, gratuity, something extra”), from corōlla (“small garland”), diminutive of corōna (“crown”).
corollary (plural corollaries)
- Something given beyond what is actually due; something added or superfluous.
- 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 storefont.
- (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.
proposition which follows easily
- forming a proposition that follows from one already proved