We don't have synonyms for cicad yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are nicad, cica and cicar.
(n) :
Alternative form of cicada. [Any of several insects in the superfamily Cicadoidea, with small eyes wide apart on the head and transparent well-veined wings.]
(n) :
Acronym of Concise International Chemical Assessment Document.
(n) :
Alternative form of cicada. [Any of several insects in the superfamily Cicadoidea, with small eyes wide apart on the head and transparent well-veined wings.]
(n) :
Acronym of Concise International Chemical Assessment Document.