Fer‐ment″a‐tive (?), a. [Cf. F. fermentatif.] Causing, or having power to cause, fermentation; produced by fermentation; fermenting; as, a fermentative process.
— Fer‐ment″a‐tive‐ly, adv. — Fer‐ment″a‐tive‐ness, n.
Webster's Dictionary 1913
Fer‐ment″a‐tive (?), a. [Cf. F. fermentatif.] Causing, or having power to cause, fermentation; produced by fermentation; fermenting; as, a fermentative process.
— Fer‐ment″a‐tive‐ly, adv. — Fer‐ment″a‐tive‐ness, n.