infinitesimal

/ˌɪnfɪnɪˈtɛsɪməl/
adjective
  1. Extremely small; so tiny that it is almost impossible to measure.
    • Scientists study infinitesimal particles that make up atoms.
    • There was an infinitesimal crack in the vase, barely visible to the eye.
    • The chance of winning the lottery is infinitesimal, but people still try.
Antonyms
noun
  1. An extremely small amount or quantity.
    • The difference between the two measurements was an infinitesimal.
    • In calculus, we work with infinitesimals to understand change.
    • He added only an infinitesimal of spice to the dish.
What does "infinitesimal" mean? | whatsthatwordmean | whatsthatwordmean