Wiktionary
telotroch
n. (context biology English) a posterior tuft of cilia in a trochophore larva
Wikipedia
Telotroch
Telotroch is the free-swimming stage of members of the order Sessilida. Sessilida are ciliate protozoa of the subclass Peritrichia.
A sessile individual can turn into a motile one to migrate to a better place.
Image:Vorticellaconverts1.ogv|Vorticella reverts to a telotroch note time stop in lower righthand corner.
Another definition of telotroch: a posterior tuft of cilia in larvae of some animals. See trochophore larva and hemichordates for references.