We don't have synonyms for graphene yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are graphite, grapheme and grayhen.
(n) :
(inorganic chemistry) An arbitrarily large-scale, one-atom-thick layer of graphite, an allotrope of carbon, that has remarkable electric characteristics.
(n) :
(organic chemistry) Any polycyclic aromatic hydrocarbon having the structure of part of a layer of graphite.
(n) :
(inorganic chemistry) An arbitrarily large-scale, one-atom-thick layer of graphite, an allotrope of carbon, that has remarkable electric characteristics.
(n) :
(organic chemistry) Any polycyclic aromatic hydrocarbon having the structure of part of a layer of graphite.