actinotrich A slender, horny, flexible, unsegmented fibril (hair-like) which strengthens the embryonic fin fold and which may persist in the outer edge of the adult fin membrane or in the adipose fin. Found on http://www.wordinfo.info/words/index/info/view_unit/2179/
actinotrich A slender, horny, flexible, unsegmented fibril (hair-like) which strengthens the embryonic fin fold and which may persist in the outer edge of the adult fin membrane or in the adipose fin.