t(y)üˈthidəˌdē noun plural
Usage: capitalized
Etymology: New Latin, from Teuthid-, Teuthis, type genus + -idae
: a family of marine fishes comprising the surgeonfishes that are distinguished by a bony plate or spine on the side of the tail, teeth resembling incisors, and fine scales resembling shagreen and with the Moorish idols constituting a distinct suborder of Percomorphi