[ih-kwiv-uh-luh nt or for 5, ee-kwuh-vey-luh nt]
/ɪˈkwɪv ə lənt or for 5, ˌi kwəˈveɪ lənt/

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.

6.

something that is equivalent.

Origin of equivalent

Related forms

equivalently, adverb

nonequivalent, adjective, noun

nonequivalently, adverb

quasi-equivalent, adjective

quasi-equivalently, adverb

superequivalent, adjective, noun

unequivalent, adjective

unequivalently, adverb

Can be confused

equivalent, equivocal.

British Dictionary definitions for unequivalent

/ɪˈkwɪvələnt/

adjective

1.

equal or interchangeable in value, quantity, significance, etc

2.

having the same or a similar effect or meaning

3.

(maths)

- having a particular property in common; equal
- (of two equations or inequalities) having the same set of solutions
- (of two sets) having the same cardinal number

4.

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

Derived Forms

equivalently, adverb

Word Origin

C15: from Late Latin aequivalēns, from aequivalēre to be equally significant, from Latin aequi-equi- + valēre to be worth

Word Origin and History for unequivalent

unequivalent in Medicine

**equivalent** e·quiv·a·lent (ĭ-kwĭv'ə-lənt)*adj.*

Equal, as in value, force, or meaning.

unequivalent in Science

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