Something that is compatible with something else.
Able to get along well.
Capable of easy interaction.
Consistent; congruous.
Anything that is virtually equal to something else, or has the same value, force, etc.
An equivalent weight.
To make equivalent to; to equal.
Having the equal ability to combine.
Similar or identical in value, meaning or effect; virtually equal.
Of a map, equal-area.
Equal in measure but not admitting of superposition; applied to magnitudes.
Of two sets, having a one-to-one correspondence.
Relating to the corresponding elements of an equivalence relation.