boiling point(redirected from Atmospheric pressure boiling point)
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1. Abbr. BP
a. The temperature at which a liquid boils at a fixed pressure, especially under standard atmospheric conditions.
b. The temperature at which the vapor pressure of a liquid is equal to the ambient atmospheric pressure.
a. The point at which one loses one's temper.
b. The point of crisis; the turning point.
1. (Chemistry) the temperature at which a liquid boils at a given pressure, usually atmospheric pressure at sea level; the temperature at which the vapour pressure of a liquid equals the external pressure
2. informal the condition of being angered or highly excited
1. the temperature at which the vapor pressure of a liquid is equal to the pressure of the atmosphere on the liquid, equal to 212°F (100°C) for water at sea level. Abbr.: b.p.
2. the point beyond which one becomes visibly angry, outraged, or the like.
3. the point at which matters reach a crisis.
The temperature at which a liquid changes to a vapor or gas. As the temperature of a liquid rises, the pressure of escaping vapor also rises, and at the boiling point the pressure of the escaping vapor is equal to that exerted on the liquid by the surrounding air, causing bubbles to form. Typically boiling points are measured at sea level. At higher altitudes, where atmospheric pressure is lower, boiling points are lower. The boiling point of water at sea level is 212°F (100°C); that of mercury is 673.84°F (356.58°C).
The temperature at which a liquid’s vapor pressure equals external pressure.
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|Noun||1.||boiling point - the temperature at which a liquid boils at sea level; "they brought the water to a boil"|
temperature - the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
|2.||boiling point - being highly angry or excited; ready to boil over; "after an hour of waiting I was at the boiling point"|