Abbreviation for 'boiling point temperature,' the specific temperature at which a liquid substance transitions to gas under standard atmospheric pressure.
From English initials: 'boiling' (from Old English 'bubbian'), 'point,' and 'temperature' (from Latin 'temperatus' meaning 'appropriate measure'). Used in chemistry and materials science.
BPT is a fundamental constant for every substance—water always boils at 100°C at sea level, but ethanol boils at 78°C, and this difference actually helped scientists understand what boiling really is at the molecular level.
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