(thermodynamics) Also called escaping tendency. a property of a gas, related to its partial pressure, that expresses its tendency to escape or expand, given by d(logef) = dμ/RT, where μ is the chemical potential, R the gas constant, and T the thermodynamic temperature f
the state or quality of being fugacious
passing quickly away; transitory; fleeting
(botany) lasting for only a short time: fugacious petals
fugaciously, adverb fugaciousness, noun
C17: from Latin fugax inclined to flee, swift, from fugere to flee; see fugitive
"fleeing, likely to flee," 1630s, from Latin fugaci-, stem of fugax "apt to flee, timid," figuratively "transitory, fleeting," from fugere "to flee" (see fugitive) + -ous. Related: Fugaciously; fugaciousness.