infinitesimally

adjective

1. indefinitely or exceedingly small; minute: infinitesimal vessels in the circulatory system.
2. immeasurably small; less than an assignable quantity: to an infinitesimal degree.
3. of, relating to, or involving infinitesimals.

noun

4. an infinitesimal quantity.
5. Mathematics. a variable having zero as a limit.

adjective

1. infinitely or immeasurably small
2. maths of, relating to, or involving a small change in the value of a variable that approaches zero as a limit

noun

3. maths an infinitesimal quantity

Adjective

1. Capable of having values approaching zero as a limit.

Noun

1. A function or variable continuously approaching zero as a limit.