In an infinitesimal manner. / To an infinitesimal degree.

Incalculably, exceedingly, or immeasurably minute; vanishingly small. / (mathematics) Of or pertaining to values that approach zero as a limit. / (informal) Very small.

(mathematics) A non-zero quantity whose magnitude is smaller than any positive number (by definition it is not a real number).

plural of infinitesimal

(mathematics) conversion or extension to infinitesimal form

The quality of being infinitesimal.

The quality of being infinitesimal.

plural of infinitesimalization

(calculus) Differential calculus and integral calculus considered together as a single subject.

(archaic, calculus) calculus / (mathematics, mathematical analysis) a systematic employment of infinitesimals that reduces calculus to algebra; nonstandard analysis.