infinitesimal

adjective
UK: /ˌɪnfɪnɪˈtesɪməl/
US: /ˌɪnfɪnɪˈtesɪməl/

  1. Extremely small; so small as to be almost immeasurable.

    1. The chance of winning was infinitesimal.
    2. The amount of radiation they were exposed to was infinitesimal and harmless.

Synonyms

microscopic tiny negligible minute minuscule
infinitesimal noun

  1. An immeasurably small quantity or value; something so small it is negligible.

    1. The dust particles were infinitesimals.
    2. In calculus, we deal with infinitesimals to find rates of change.

Frequently Asked Questions

The phonetic transcription of "infinitesimal" is /ˌɪnfɪnɪˈtesɪməl/ in British English and /ˌɪnfɪnɪˈtesɪməl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "infinitesimal": microscopic, tiny, negligible, minute, minuscule.

Example usage of "infinitesimal": "The chance of winning was infinitesimal.". More examples on the page.