(physics) the principle that the laws of gravity are independent of velocity and position

(physics) any of several principles, in relativity, concerned with the uniformity of physical measurements in different frames of reference

(chemistry) the amount of a substance, in grams, that is numerically equivalent to its equivalent weight

(chemistry) The atomic weight of an element or radical divided by its valence; the molecular weight of a compound divided by its combining power in a specific reaction.

(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.

Having row-equivalence

(linear algebra) A relation between two matrices of the same size, such that every row of one matrix is a linear combination of the rows of the other matrix, and vice versa. It is an equivalence relation.