Answer: extender

AnswerCrossword Clue
EXTENDERCereal in meat, e.g.
EXTENDERSubstance added as a diluent.
EXTENDERAdditive
EXTENDERFormer sheep herder?
EXTENDERAdditive to increase volume or bulk
EXTENDERHamburger Helper, e.g.
extenderA substance added to a product such as paint, ink, or glue, to dilute its color or increase its bulk
extendera substance added to another substance
extenderA person or thing that extends something