noun a quantity or value that is extremely small or close to zero
adjective exceedingly small; minute
In philosophy, infinitesimal is used in discussions of the nature of space, time, and change, particularly in relation to the concept of continuity and the idea of infinitely small increments.
In mathematics, an infinitesimal is a quantity that is closer to zero than any standard real number but is not zero itself. It is used in calculus to represent quantities that are very small.
In engineering, infinitesimal is used in fields such as fluid dynamics and structural analysis to represent very small changes or quantities that are negligible compared to the overall system.
In economics, infinitesimal is used in mathematical models to represent small changes or increments in variables such as prices, quantities, or utility.
In physics, infinitesimal is used to describe quantities that are extremely small and approaching zero, such as infinitesimal changes in position or time.
In literary criticism, writers may use the term 'infinitesimal' to describe a small or insignificant detail in a work of literature.
Psychologists may use 'infinitesimal' to refer to a very small or imperceptible change in behavior or thought processes during therapy sessions.
Mathematicians use 'infinitesimal' to describe quantities that are infinitely small, often in the context of calculus or analysis.
Physicists use 'infinitesimal' to describe quantities that are extremely small, such as the size of particles or changes in physical properties at a microscale.
Economists may use 'infinitesimal' to refer to very small changes in economic indicators or variables that have minimal impact on overall trends.