-ˈthō(ˌ)dēz noun
Usage: capitalized
Etymology: New Latin, from Greek akanthōdēs thorny, spiny, from akanth- acanth- + -ōdēs -ode
: a genus of small slender possibly degenerate fishes having generalized toothless jaws and a single small dorsal fin and found in the Carboniferous and Permian formations