Webster’s Revised Unabridged Dictionary · 1913
Holocephali
Hol′o·ceph′a·li, n. pl. [NL., from Gr. ὅλος whole + κεφαλή head.] (Zoöl.) An order of elasmobranch fishes, including, among living species, only the chimæras; — called also Holocephala. See Chimæra; also Illustration in Appendix.