Definition of pre-fermentation in English:
pre-fermentation
noun priːˌfəːm(ə)nˈteɪʃnpriːˌfəːmɛnˈteɪʃn
rare A preliminary fermentation.
Origin
Mid 18th century; earliest use found in William Ellis (c1700–1758), agriculturist and writer. From pre- + fermentation.