equivalent

American  

[ih-kwiv-uh-luhnt, ee-kwuh-vey-luhnt] / ɪˈkwɪv ə lənt, ˌi kwəˈveɪ lənt /

adjective

1. equal in value, measure, force, effect, significance, etc..

   His silence is equivalent to an admission of guilt.

2. corresponding in position, function, etc..

   In some ways their prime minister is equivalent to our president.

3. Geometry. having the same extent, as a triangle and a square of equal area.

4. Mathematics. (of two sets) able to be placed in one-to-one correspondence.

5. Chemistry. having the same capacity to combine or react chemically.

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noun

1. something that is equivalent.

equivalent British  

/ ɪˈkwɪvələnt /

adjective

1. equal or interchangeable in value, quantity, significance, etc

2. having the same or a similar effect or meaning

3. maths

   1. having a particular property in common; equal

   2. (of two equations or inequalities) having the same set of solutions

   3. (of two sets) having the same cardinal number

4. maths logic (of two propositions) having an equivalence between them

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noun

1. something that is equivalent

2. short for equivalent weight

equivalent Scientific  

/ ĭ-kwĭv′ə-lənt /

1. Equal, as in value, meaning, or force.

2. 1. Of or relating to a relation between two elements that is reflexive, symmetric, and transitive.

   2. Having a one-to-one correspondence, as between parts. Two triangles having the same area are equivalent, as are two congruent geometric figures.

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Related Words

See equal.

Other Word Forms

• equivalently adverb
• nonequivalent adjective
• nonequivalently adverb
• quasi-equivalent adjective
• quasi-equivalently adverb
• superequivalent adjective
• unequivalent adjective
• unequivalently adverb

Etymology

Origin of equivalent

First recorded in 1425–75; late Middle English, from Late Latin aequivalent- (stem of aequivalēns ), present participle of aequivalēre. See equi-, -valent

Explanation

If two things are basically the same, you can say that they're the equivalent of each other. Like, studying advanced physics is the equivalent of banging your head against the wall. Equivalent's Latin roots are "equal" and "value," which suggests that the word originally was used to describe things that had the same value. Now it can be used to describe things that have the same effect, or importance, or role — for example, "England's Parliament is the equivalent of America's Congress." It can also be used as an adjective: "Eating a bowl of Sugar Pops for breakfast is equivalent to starting your day with two scoops of ice-cream."

Example Sentences

The planned 500MW facility to store renewable energy will be equivalent in size to more than 20 football pitches and is one of hundreds of similar projects in the pipeline across Scotland.

From BBC • Apr. 11, 2026

State salaries — often the equivalent of $15 to $30 a month — have been completely overtaken by soaring food prices driven by scarcity and inflation.

From Salon • Apr. 11, 2026

"This is that stage which, in English, is called the equivalent of 'make or break.'"

From Barron's • Apr. 11, 2026

One of the biggest shifts in mindset required for switching to EVs is understanding that they aren’t as equivalent to one another as gas vehicles, which have had more than a century to mature.

From The Wall Street Journal • Apr. 10, 2026

The spitting incident, symbolically equivalent to burning the American flag, had apparently earned the government’s wrath.

From "Endgame" by Frank Brady

Related Words

• commensurate
• comparable
• corresponding
• equal
• identical
• proportionate
• tantamount