Noun
vapour pressure (plural vapour pressures)
(Britain) Alternative spelling of vapor pressure
At this pressure, water boils at convert (described in vapour pressure of water article). Source: Internet
Refractory metals such as tungsten and rhenium do not emerge from the target even at high temperatures due to their low vapour pressure. Source: Internet
The answer is simple: most species have a negligible vapour pressure at such low temperatures and this means that they quickly condense on the sides of the apparatus. Source: Internet
The system is usually baked, preferably under vacuum, to temporarily raise the vapour pressure of all outgassing materials in the system and boil them off. Source: Internet