comminutor

From comminute +‎ -or.

comminutor (plural comminutors)

1. (engineering) A type of machine that grinds up solid materials, especially in waste treatment
   • 1988 February 12, Harold Henderson, “A Better Glass of Water”, in Chicago Reader‎:

     First, underground pipes carry used water away from the hotels and offices and into a king-size garbage grinder (comminutor), two parallel screws whose threads are knife blades big enough and strong enough to mince any solids into tiny pieces.