rhom·bo·gen \ˈrämbəjə̇n, -ˌjen\noun orrhom·bo·gene\-ˌjēn\ (-s) Etymology:rhomb- + -gen, -gene : the form of a mesozoan of the order Dicyemida that occurs in the sexually mature host, arises from a final generation of nematogens, and gives rise to free-swimming ciliated larvae — compare infusorigen • rhom·bo·gen·ic\|rämbə|jenik\adjective • rhom·bog·e·nous\(ˈ)räm|bäjənəs\adjective