We don't have synonyms for hornworts yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hornwort, hornworms and hornwork.
(n) :
A bryophyte, of phylum Anthocerotophyta, with a leafless thallus characterized by a dominant gametophyte stage of the life cycle and a sporophyte stage shaped like a horn.
(n) :
An aquatic flowering plant in the genus Ceratophyllum
(n) :
A bryophyte, of phylum Anthocerotophyta, with a leafless thallus characterized by a dominant gametophyte stage of the life cycle and a sporophyte stage shaped like a horn.
(n) :
An aquatic flowering plant in the genus Ceratophyllum