Source : Webster's Revised Unabridged Dictionary (1913)

Ctenoid \Cte"noid\ (t[=e]"noid or t[e^]n"oid), a. (Zo["o]l.)
   (a) Having a comblike margin, as a ctenoid scale.
   (b) Pertaining to the Ctenoidei. -- n. A ctenoidean.