[ik-stree-muh m]
noun, plural ex·tre·ma [ik-stree-muh] /ɪkˈstri mə/. Mathematics.
  1. a maximum or minimum value of a function in a specified neighborhood.

Origin of extremum

1900–05; < New Latin, noun use of neuter of Latin extrēmus extreme

ad extremum

[ahd ek-strey-moo m; English ad ek-stree-muh m]
adverb Latin.
  1. to the extreme; at last; finally.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for extremum

Historical Examples of extremum