2 entries under this word

Infinitesimal

Ĭn′fin-ĭ-tēs′ĭ-mal, a.

adjective

a. [Fr. infinitésimal, Sp. infinitesimal, It. infinitesimale, from Fr. infinitésime, Sp. infinitesimo, It. infinitissimo, infinitely small, from Lat. infinitus. See INFINITE.] Infinitely small; less than any assignable quantity.

Ĭn′/fĭn-ĭ-tēs′ĭ-mal, n.

noun

n. (Math.) An infinitely small quantity; that which is less than any assignable quantity.