1. plural of fluidness; the quality or state of being fluid; the ability to flow smoothly or move with ease
Usage: typically used in abstract or technical contexts
2. plural of fluidness; the quality of being graceful, natural, or effortless in movement or expression
Usage: often used in artistic or performance contexts

Examples

• The dancer's movements demonstrated remarkable fluidnesses of motion.
• The fluidnesses of different oils vary depending on temperature.
• The speaker's fluidnesses in multiple languages impressed the audience.
• The architect praised the fluidnesses of the building's design.
• Water and mercury have different fluidnesses at room temperature.
• The musician achieved fluidnesses in her performance through years of practice.