cormidium
From ZooTerms (Dictionary of Invertebrate Zoology)
Cnidaria: Hydrozoa) A siphonophore gastrozooid with a tentacle and one or more gonophores of one sex; sensu stricto, cormidia are colonies within colonies
cormidium (noun; plural cormidia; Greek diminutive kormos, trunk of a tree): (
See also: eudoxome.