adj. Of, pertaining to, causing or undergoing fermentation
the GNU version of the Collaborative International Dictionary of English
adj. Causing, or having power to cause, fermentation; produced by fermentation; fermenting.
The Century Dictionary and Cyclopedia
Causing or having power to cause fermentation.
Of the nature of, consisting in, or produced by fermentation.
Also fermentive.
Word Usage
"Flour, when well boiled, though infinitely better than arrowroot, is still only a kind of fermentative paste, that counteracts its own good by after-acidity and flatulence."