emulation

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[edit] English

From the Latin aemulātiōnem, accusative singular form of aemulātiō.

emulation (plural emulations)

The endeavor or desire to equal or excel someone else in qualities or actions.
(obsolete) Jealous rivalry; envy; envious contention.
- 1621, Robert Burton, The Anatomy of Melancholy, New York Review Books 2001, p. 263:
  
  Scarce two gentlemen dwell together in the country [...], but there is emulation betwixt them and their servants, some quarrel or some grudge betwixt their wives or children [...].
(computing) Running a program or other software designed for a different system.