We don't have synonyms for hypercane yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hyperfine, hypercone and hyperplane.
(n) :
(meteorology, very rare) A hypothetical class of an extremely severe hurricane with ocean temperatures reaching approximately 50 °C (122 °F) and formed by significant conditions, such as extensive global warming, having wind speeds exceeding 800 kilometers per hour (500 mph).
(n) :
(meteorology, very rare) A hypothetical class of an extremely severe hurricane with ocean temperatures reaching approximately 50 °C (122 °F) and formed by significant conditions, such as extensive global warming, having wind speeds exceeding 800 kilometers per hour (500 mph).