Pronunciation : In`fin*i*tes"i*mal Part of Speech : a. Etymology : [Cf. F. infinitésimal, fr. infinitésime infinitely small, fr. L. infinitus. See Infinite, a.] Definition : Defn: Infinitely or indefinitely small; less than any assignable quantity or value; very small. Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal. Source : Webster's Unabridged Dictionary, 1913
Pronunciation : In`fin*i*tes"i*mal Part of Speech : n. Definition : Defn: An infinitely small quantity; that which is less than any assignable quantity.