Origin: Latin suffix -tion
Top fermentation has 2 different meanings across 1 category:
a violent kind of alcoholic fermentation at a temperature high enough to carry the yeast cells to the top of the fermenting liquid; used in the production of ale
"top fermentation uses a yeast that ferments at higher temperatures than that used for bottom fermentation"
Alcoholic fermentation during which the yeast cells are carried to the top of the fermenting liquid.