Dictionary.net

• Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

2010 - New Age Dictionary Database
By Oddity Software

• Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.