corollary

[ kawr-uh-ler-ee, kor-; especially British, kuh-rol-uh-ree ]

noun

, plural cor·ol·lar·ies.

1. Mathematics. a proposition that is incidentally proved in proving another proposition.
2. an immediate consequence or easily drawn conclusion.
3. a natural consequence or result.

corollary

/ kəˈrɒlərɪ /

noun

1. a proposition that follows directly from the proof of another proposition
2. an obvious deduction
3. a natural consequence or result

adjective

1. consequent or resultant

corollary

/ kôr′ə-lĕr′ē /

1. A statement that follows with little or no proof required from an already proven statement. For example, it is a theorem in geometry that the angles opposite two congruent sides of a triangle are also congruent. A corollary to that statement is that an equilateral triangle is also equiangular.

Word History and Origins

Origin of corollary¹

1325–75; Middle English < Late Latin corollārium corollary, in Latin: money paid for a garland, a gift, gratuity. See corolla, -ary

Word History and Origins

Origin of corollary¹

C14: from Latin corollārium money paid for a garland, from Latin corolla garland, from corōna crown

Example Sentences

Those familiar with the city’s geography will recognize that this spectrum has a real, physical corollary.

From Washington Post

This type of framing has a direct corollary on how these students might be treated by teachers, administrators, and tutors, as well as how they are viewed by leaders, politicians and other people who hold power.

From Washington Blade

There aren’t really corollaries in the United States, but we can try to construct one.

From Washington Post

Its sad and much more frequent corollary, however, is Shabby Kit Life.

From Outside Online

In the early 20th century, President Theodore Roosevelt added a corollary to what had become known as the Monroe Doctrine.

From Washington Post

A civilian corollary was proven when ISIS waterboarded journalist James Foley before beheading him.

From The Daily Beast

They had a corollary: “Each new level of sexual activity requires consent.”

From The Daily Beast

And the corollary is that “those” people are where they are entirely because of their own doing.

From The Daily Beast

Why not feature topics not solely defined by a corollary to “women”?

From The Daily Beast

Increasingly, sex and its corollary, romantic love, were seen as a healthy part of a relationship.

From The Daily Beast

Two other centuries were employed in developing the first corollary of liberty of will, namely, liberty of conscience.

From Project Gutenberg

The corollary is that tired feeling which must have sorely tried the tyros or young recruits.

From Project Gutenberg

Exploit Second was four years later; in some sort a corollary to this; and a winding-up of the Swedish business.

From Project Gutenberg

The early part of the last century was prolific in chemical discoveries, and, as a corollary, in chemical theories of disease.

From Project Gutenberg

It is however from the corollary involved in this assumption that weak peoples are made to suffer.

From Project Gutenberg

Related Words

• analogy
• upshot