ensilage noun 2verb 1forms 3 noun2 •The process of producing silage by the fermentation of green fodder. •(no longer used) Synonym of silage.Comparing the ensilage of this season with that produced during the past five years at the station, we can safely say that this ensilage was by far the best yet made at this station. — 1890 verb1 •To preserve in a silo. formsensilaged · ensilaging · ensilages