Etymology: New Latin trochophora
: a free-swimming larva characteristic of various aquatic invertebrates (as many worms, rotifers, mollusks) in typical cases having a bilaterally symmetrical ovoid or pyriform body with an equatorial preoral circlet of cilia, a mouth, an intestine, an anal opening, an apical sensory plate, and sometimes nephridial tubes and a second ciliated band behind the mouth — compare müller's larva
Useful english dictionary. 2012.