n.
Pronunciation: s ə - ' l ā -k ē - ə n
Function: noun
Etymology: ultimately from Greek selachos cartilaginous phosphorescent fish; akin to Greek selas brightness
Date: 1835
: any of a variously classified group (Selachii) of cartilaginous fishes that includes the existing sharks and typically most related elasmobranchs (as rays)
– selachian adjective