(uncountable) The condition of being equivalent or essentially equal. / (countable, mathematics) An equivalence relation; ≡; ~

Similar or identical in value, meaning or effect; virtually equal. / (mathematics) Of two sets, having a one-to-one correspondence.

(transitive) To equate, to consider or make equal or equivalent (to, with). / (intransitive) To equal, to be equivalent (to).

plural of equivalent

(countable) An equivalent thing. / (uncountable) equivalence

In an equivalent manner; equally.

The act of equating or making equivalent.

plural of equivalation

simple past tense and past participle of equivalent

(law, US) A legal rule in most patent systems that allows a court to hold a party liable for patent infringement when the infringing device or process does not fall within the literal scope of a patent claim, but nevertheless is equivalent to the claimed invention.