Definition from Wiktionary, the free dictionary
- (fluid dynamics) The point in space at which fluid flow around an object changes from laminar to turbulent.
- The temperature at which a substance changes from one state of matter to another, or from one solid phase to another.
- Any similar point at which a characteristic of a system changes abruptly.
point at which flow becomes turbulent
temperature where substance changes from one state of matter to another
point at which a characteristic of system changes abruptly