rhizocephalan /ˌraɪzəʊˈsɛfələn/

• 1. 

  N any parasitic crustacean of the order Rhizocephala, esp Sacculina carcini, which has a saclike body and sends out absorptive processes into the body of its host, the crab: subclass Cirripedia (barnacles) 根头目甲壳动物

• 2. 

  ADJ of, relating to, or belonging to the order Rhizocephala 根头目甲壳动物的