in·fu·so·ri·gen \ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷rəjə̇n, -rəˌjen\noun alsoin·fu·so·ri·gene\-rəˌjēn\ (-s) Etymology:infusoriform (II) + -gen, -gene : a reduced individual of certain mesozoans that is formed within the rhombogen and that gives rise to the infusoriform larva