Codium
noun
Co·di·um
ˈkōdēəm
: a genus (the type of the family Codiaceae) of green algae having a tubular thallus made up of interwoven threads that often end in club-shaped cells and often branching or forming spherical or cushion-shaped masses
Word History
Etymology
New Latin, from Greek kōidion fleece, diminutive of kōas; from the fleecy thallus; perhaps akin to Latin cutis skin