We don't have synonyms for acheulian yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are acheulean, acheilia and chellian.
(n) :
Alternative spelling of Acheulean. [(archaeology) A lower Paleolithic period characterized by the presence of flaked bifacial hand axes.]
(adj) :
Alternative spelling of Acheulean. [(archaeology) Of or pertaining to a lower Paleolithic period characterized by the presence of flaked bifacial hand axes.]
(n) :
Alternative spelling of Acheulean. [(archaeology) A lower Paleolithic period characterized by the presence of flaked bifacial hand axes.]
(adj) :
Alternative spelling of Acheulean. [(archaeology) Of or pertaining to a lower Paleolithic period characterized by the presence of flaked bifacial hand axes.]