mesotrochal
/mɪˈsɒtrəkl/ /ˌmɛsə(ʊ)ˈtrəʊkl/Zoology
adjective
Of a polychaete larva: having one or more rows of cilia encircling the middle of the body.
Origin
Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From mesotrocha + -al.