E*quiv"a*lence (?), n. [Cf. F. 'equivalence, LL. aequivalentia.]
1.
The condition of being equivalent or equal; equality of worth, value, signification, or force; as, an equivalence of definitions.
2.
Equal power or force; equivalent amount.
3. Chem. (a)
The quantity of the combining power of an atom, expressed in hydrogen units; the number of hydrogen atoms can combine with, or be exchanged for; valency. See Valence.
(b)
The degree of combining power as determined by relative weight. See Equivalent, n., 2.
[R.]
© Webster 1913.
E*quiv"a*lence, v. t.
To be equivalent or equal to; to counterbalance.
[R.]
Sir T. Browne.
© Webster 1913.