endocyclic

From ZooTerms (Dictionary of Invertebrate Zoology)
Jump to: navigation, search
endocyclic (adjective; Greek endon, within; kyklos, circle): (Echinodermata: Echinoidea] Pertaining to a test with rounded profile, peristome and periproct central at the oral and aboral poles respectively; periproct encircled by apical system of plates.