1. Plural of fluxion; in mathematics (historical), infinitesimal rates of change or derivatives, as developed by Isaac Newton.
Usage: archaic; mathematics; historical
2. Plural of fluxion; the act or process of flowing or continuous change.
Usage: rare; formal

Examples

• Newton's method of fluxions was an early form of calculus.
• The fluxions of the river created a dynamic landscape.
• Mathematicians of the 18th century debated the rigor of fluxions.
• The theory of fluxions eventually evolved into modern differential calculus.
• Understanding fluxions requires knowledge of infinitesimal mathematics.