bottom steam

bottom steam

[′bäd·əm ‚stēm]
(chemistry)
Steam piped into the bottom of the still during oil distillation.
References in periodicals archive ?
Schoolchildren entertained with intriguing Maypole Dancing, Shepley Band with quite beautiful playing, the Dungeon Bottom steam garden railway proved popular and traditional games around the green were busy all afternoon.
The light mushroom gyoza, kept light through its bottom steamed preparation, does wonders for your palate.