We don't have synonyms for monoicous yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are monoecious, monotocous and synoicous.
(adj) :
Alternative form of monoecious. [(botany, invertebrate) Having both the male and female reproductive organs in the same individual, either in different flowers or in the same or different flowers; hermaphrodite.]
(adj) :
Alternative form of monoecious. [(botany, invertebrate) Having both the male and female reproductive organs in the same individual, either in different flowers or in the same or different flowers; hermaphrodite.]