The Collaborative International Dictionary of English v.0.48:
Actinomyxidia \Actinomyxidia\ n. 1. an order comprising parasites of worms. Syn: order Actinomyxidia. [WordNet 1.5]WordNet (r) 3.0 (2006):
Actinomyxidia n 1: parasites of worms [syn: Actinomyxidia, order Actinomyxidia]