infinitesimal

 
Pronunciation: /ˌɪnfɪnɪˈtɛsɪm(ə)l/

adjective

  • extremely small: an infinitesimal pause

noun

Mathematics
  • an indefinitely small quantity; a value approaching zero.

Derivatives

infinitesimally

adverb

Origin:

mid 17th century: from modern Latin infinitesimus, from Latin infinitus (see infinite), on the pattern of centesimal