a.1.(Zool.) Having the middle of the body surrounded by bands of cilia; - said of the larvæ of certain marine annelids.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
They possess one or two ciliated mesotrochal rings (Blake, 1996, reports as many as three) and adult chaetae (Bhaud, 2003).
The principal evidence in favor of a holopelagic chaetopterid species is the lack of all ciliated mesotrochal rings and the presence of adult features.
Although the Chaetopterus mesotrochal bands are not metatrochs, as defined above, they may be homologous to other types of trochal bands at the level of their developmental pathway.