Definition and background:
a way of expressing musical rhythm by a system of bodily movements. this system was developed by Emile Jaques-Dalcroze, who founded an institute promoting eurhythmics in Germany in 1910.
For more information on the music term "Eurhythmics" check out these other resources:
Wikipedia - Glossary of Musical Terminology
Virginia Tech Multimedia Music Dictionary
ORB -- Medieval Music Glossary