noun. Something produced in the making of something else.

noun. A secondary result; a side effect.

noun. A secondary or additional product; something produced, as in the course of a manufacture, in addition to the principal product.

"Poor chemistry was a byproduct from the combined $66.5 million contracts given to cornerback Drayton Florence and wide receiver Jerry Porter, who didn't play up to their salaries, causing resentment among some veterans."

product