See baleen whale.
Origin of mysticeteNew Latin mysticētus from Greek mustikētos textual transmission error (found in early modern editions of Aristotle's Historia animalium ) of the phrase (ho) mūs to kētos (the) whale (called) the mouse (Aristotle's designation for an unknown kind of aquatic animal) mūs mouse ; see mūs- in Indo-European roots. to neuter nominative and accusative singular definite article ; see to- in Indo-European roots. kētos sea monster, whale ( of unknown origin )
- (zoology) Any of the baleen whales (of suborder Mysticeti)