emulation

Etymology

From Middle French émulation, from Latin aemulātiōnem, accusative singular form of aemulātiō.

noun

1. The endeavor or desire to equal or excel someone else in qualities or actions.
   a great figure who is worthy of respect and emulation
   Allur'd, not forc'd, encourag'd, not compell'd; The shrinking eye look'd up, the soul was cheer'd, Felt as it learnt, confided e'er it fear'd; And first by emulation's ardour mov'd, Prest onward in the path which soon it lov'd. 1827, Lydia Sigourney, Poems, Tribute to an Instructor, page 210
2. (obsolete) Jealous rivalry; envy; envious contention.
   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 […] , New York Review Books 2001, p.263
3. (computing) Execution of a program or other software designed for a different system, by simulating parts of the other system.