An immeasurably or incalculably small quantity or quantity.

Mathematics A function or adjustable continually nearing zero as a limit.

A non-zero volume whose magnitude is smaller compared to any good number (by definition it is not an actual quantity).

An infinitely little amount; whatever is under any assignable quantity.

In mathematics, a fictitious volume therefore tiny that by successive additions to it self no sensible amount, for instance the device of quantity, could previously be produced.

(mathematics) a variable which includes zero as its restriction

(corporation) the practice of purchasing enough shares in a firm to threaten a takeover and thereby forcing the owners to buy those shares back at a premium in order to stay in business...

## How would you define infinitesimal?