We don't have synonyms for radiole yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are radicle, radiale and radioli.
(n) :
(zoology) A heavily ciliated feather-like tentacle occurring in clusters on the crowns of certain tubeworms, especially those of the order Canalipalpata (fan-head worms), used for feeding and respiration.
(n) :
(zoology) A heavily ciliated feather-like tentacle occurring in clusters on the crowns of certain tubeworms, especially those of the order Canalipalpata (fan-head worms), used for feeding and respiration.