equation

(e-kwa’shun) [L. agua’tio, from equa’re to make equal]. An expre ion made up of two members connected by the sign of equality, =. chemic e., an equation which expre es a chemic reaction, the symbols on the left of the equation denoting the substances before, and those on the right after, the reaction. personal e., the more or le constant difference between the results of observation depending upon the personal qualities of observers.