We don't have synonyms for parethmoid yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pyrethroid.
(adj) :
(anatomy) Near or beside the ethmoid bone or cartilage; applied especially to a pair of bones in the nasal region of some fishes, and to the ethmoturbinals in some higher animals.
(adj) :
(anatomy) Near or beside the ethmoid bone or cartilage; applied especially to a pair of bones in the nasal region of some fishes, and to the ethmoturbinals in some higher animals.