ten·du 1 (t?n?do?o)n. Any of several Asian ebony trees.[Hindi tend?, from Sanskrit tainduka-, pertaining to tinduka?, the evergreen tree Diospyros embryopteris.]ten·du 2 (tän-do?o?, täN-dü?)adj. Relating to or being a ballet position in which a muscle or limb is stretched out: battement tendu.[French, from past participle of tendre, to stretch, from Old French, from Latin tendere; see ten- in Indo-European roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.tendu (t??n?du?) balletn (Ballet) a position in balletadj (Ballet) extendedCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014