Definition of corollary
1 : a proposition (see 1proposition 1c) inferred immediately from a proved proposition with little or no additional proof
2a : something that naturally follows : result < … love was a stormy passion and jealousy its normal corollary. — Ida Treat>b : something that incidentally or naturally accompanies or parallels <A corollary to the problem of the number of vessels to be built was that of the types of vessels to be constructed. — Daniel Marx>
Examples of corollary in a sentence
<one corollary of the rise of television was a massive makeover of radio's programming>
<increased taxes—or expanding deficits—are the inevitable corollary to any new government spending program>
Did You Know?
Corollary comes from the Late Latin noun corollarium, which can be translated as "a garland given as a reward." "Corollarium" comes from the Latin corolla, meaning "small crown or garland." If you know that a garland or small crown was sometimes given to actors in addition to their pay, it makes sense that another sense of "corollarium" is "gratuity." Later, "corollarium" developed the philosophical sense of a supplementary proposition that follows directly from one that has been proved. (You can think of a corollary as a "bonus" that follows from the proof of something else.) The broader modern sense, "something that naturally follows," evolved from the philosophical one.
Origin and Etymology of corollary
Middle English corolarie, from Late Latin corollarium, from Latin, money paid for a garland, gratuity, from corolla —see corolla
First Known Use: 14th century
COROLLARY Defined for English Language Learners
Definition of corollary for English Language Learners
: something that naturally follows or results from another thing
Seen and Heard
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