ˌ ̷ ̷ ̷ ̷ˈsefələs noun
Etymology: New Latin, from lept- + -cephalus
1. capitalized , in some especially former classifications : a genus (the type of the family Leptocephalidae) of small pelagic fishes comprising the leptocephali when these are not larvae of other fishes
2. plural lep·to·ceph·a·li -ˌlī
a. : a small-headed transparent ribbonlike pelagic first larva of various eels that lives three years in the open sea before migrating to coastal waters and gradually transforming into an elver
b. : any of various similar larvae of fishes other than eels
3. plural leptocephali
[New Latin, from lept- + -cephalus ]
a. : leptocephaly
b. : an individual with leptocephaly