what is a calotte
calotte. (biology). A cap or caplike structure. (invertebrate zoology). The four-celled polar cap in Dicyemidae.A ciliated, retractile disc in certain bryozoan larva. A dark-colored anterior area in certain nematomorphs.alotte. (biology). A cap or caplike structure. (invertebrate zoology). The four-celled polar cap in Dicyemidae.