Lophotrochozoan Posted in L Best definition Lophotrochozoan A filter feeding Protostome that have free roaming larva. Include flatworms, rotifers and lophoporates. A dumb head. “jeez Oss is such a Lophotrochozan!” How satisfied are you with the definition? Looking for Lophotrochozoan meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 65 times.