‖n. [ L., saddle cloth, fr. Gr. &unr_;; 'epi` on + "i`ppos horse.] 1. (Anat.) A depression in the sphenoid bone; the pituitary fossa. [1913 Webster]
2. (Zoöl.) A saddle-shaped cavity to contain the winter eggs, situated on the back of Cladocera. [1913 Webster]
[ニザダイあもく, nizadai amoku] (n) Acanthuroidei (suborder of the order Perciformes, containing the families Acanthuridae, Ephippidae, Luvaridae, Scatophagidae, Siganidae, and Zanclidae)