Also found in: Thesaurus, Medical, Legal, Encyclopedia.


a. Equal, as in value, force, or meaning.
b. Having similar or identical effects.
2. Being essentially equal, all things considered: a wish that was equivalent to a command.
3. Mathematics
a. Capable of being put into a one-to-one relationship. Used of two sets.
b. Having virtually identical or corresponding parts.
c. Of or relating to corresponding elements under an equivalence relation.
4. Chemistry Having the same ability to combine.
5. Logic Having equivalence: equivalent propositions.
1. Something that is essentially equal to another: "The hand is not the biological equivalent of a hammer or a screwdriver; the hand is a multipurpose tool like a Swiss Army knife" (Jonathan Gottschall).
2. Chemistry Equivalent weight.

[Middle English, from Late Latin aequivalēns, aequivalent-, present participle of aequivalēre, to have equal force : Latin aequi-, equi- + Latin valēre, to be strong; see wal- in Indo-European roots.]

e·quiv′a·lent·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
"Testing has shown that these new reagents perform equivalently to the current 11-plex TMT in terms of the numbers of quantified peptides and proteins, whilst providing a 50% increase in the number of samples that can be analysed in a single experiment," said Proteome.
Using this method, the acceptance rate of research papers for 2018 was computed as 18.6%, or equivalently, rejection rate of 81.4%.
It wasn't an accident that the study focused on the Niger Delta region, where massive amounts of oil production have not been accompanied by an equivalently substantial investment in services and infrastructure for citizens.
For example, the Volkswagen Golf 1.6-litre diesel costs around PS1,600 more than the equivalently powered petrol.
Formula (1) in Definition 1 can be equivalently expressed by the following recurrence with respect to k [member of] N :
According to ASES, in assigning members across the five MCOs, it has initially distributed the total membership of the program equivalently among the five MCOs and then adjusted the numbers by taking into consideration a combination of other factors.
That five-year total is almost enough to have equivalently funded the current PS10 million rebuild of Centenary Square.
Biodiversity is greater in the Tropics across most taxonomic groups, with an equivalently higher proportion of threatened species.
But to sustain the artificially fixed exchange rate, the government chose to impose foreign exchange and import controls, rather than let the price of dollars rise (or, equivalently, allow the peso value to fall).
The question was posed and investigated in [7] and remains unanswered even if Banach-space power bounded operators are restricted to Hilbert-space contractions, where the problem is equivalently stated for unitary operators (see Remark 3 below), and also if weak supercyclicity is strengthened to weak l-sequential supercyclicity: does there exist a weakly unstable and weakly l-sequentially supercyclic unitary operator?
The m minister said the economic progress was chiefly dependant on research and knowledge and it was highly imperative to include all nations and areas equivalently into development.