fugacity

• 名词，指气体逸散或挥发的倾向，引申指事物（尤指植物器官）缺乏持久性、转瞬即逝的性质。

A noun referring to the tendency of a gas to expand or escape, or the lack of enduring qualities, especially in plant parts.

不可数

1. Tendency of a gas to escapeC2formalscientific

   A thermodynamic property that measures the tendency of a real gas to expand or escape, accounting for deviations from ideal gas behavior.

   逸度

   • The fugacity of the gas was calculated using the van der Waals equation.
   • Engineers must consider fugacity when designing high-pressure systems.
   • The fugacity coefficient indicates how much the gas deviates from ideal behavior.

2. Lack of permanence in plantsC2formalscientific

   The quality of being transient or fleeting, used especially to describe plant parts that wither or fall off quickly.

   植物的短暂性

   • The fugacity of the petals meant the flowers bloomed for only a few hours.
   • Botanists noted the fugacity of the leaves in the desert species.
   • The fugacity of the fruit's outer layer is an adaptation to dry climates.

   同义词ephemeralityevanescenceimpermanencetransiencetransitoriness

   反义词durabilitylastingnesspermanencepersistence